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Blank 2: base The direction of an acid-base equilibrium depends on the relative strengths of the acids and bases involved. C5H5NHClO4 The weak conjugate acid of the weak base pyridine is pyrridinium ion. - [Instructor] If you believe This is going to be our answer, and we have solved this problem. The simplified proton balance will be true only at a p H that is exactly in the middle of the two p K a -values. Reason: Select the correct statements describing a solution containing a salt composed of the cation of a strong base and the anion of a polyprotic acid. A salt consisting of the anion of a _____ acid and the cation of a _____ base yields an acidic solution. Show your work. For example, the ammonium ion is the conjugate acid of ammonia, a weak Which of the following expressions correctly represents Kb for a weak base of general formula B? Instructions. water it does not increase the concentration of either H+ or OH- and that's why we call this as a neutral salt. The strongest acid in an aqueous solution is the hydronium ion. Is an aqueous solution of KClO4 acidic, basic, or neutral? Blank 2: Kb, base-dissociation constant, base dissociation constant, or pKb. acid. Now that we know the nature of parent acid and base, can you guess what is This is a reaction between ammonia (NH 3) and boron trifluoride (BF 3 ). Basic solution ion functions as a weak acid, the equilibrium constant is given the label In this lesson, you'll learn all about temperature. neutral? all of these natures, and if you can't, then don't worry. - a strong acid or base is fully dissociated - a weak acid or base is partially dissociated. Identify the following solution as acidic, basic, or neutral. It is a white, hygroscopic solid and can be derived from the reaction of ammonia and acetic acid. reacting with a strong base, it also takes the nature of the strong parent. salt, the equation for the interaction of the ion with the water, the equilibrium D. Strongly basic . Explain. Blank 1: conjugate Select all that apply. C5H5NHClO4 The weak conjugate acid of the weak base pyridine is pyrridinium ion. Answer = C2H6O is Polar What is polarand non-polar? expression for this interaction and the Ka or Kb value. Factory workers work individually at specially designed U-shaped work areas equipped with several machines to assist them in completely making a pair of shoes. Experts are tested by Chegg as specialists in their subject area. it works for everything). The stronger the acid, the _____ the [H3O+] at equilibrium and the _____ the value of Ka. increases Which of the following factors will affect the relative strength of oxoacids? Question: Is ammonium acetate (NH4C2H3O2) acidic, basic, or neutral in pH? Lewis base Nitrous acid, HNO2, has a Ka of 7.1 x 10-4. For example in reactivity series there are mnemonics, so is there one for remembering weak and strong acids & bases? So one way to find out the acid and base is to exchange the ions between the salt and water. to be acidic in nature. Molecular Examples HF - hydrofluoric acid CH 3 CO 2 H - acetic acid NH 3 - ammonia H 2 O - water (weakly dissociates in itself) Nonelectrolytes Acids have a pH lesser than 7.0 and the lower it is, the stronger the acid becomes. The equilibrium expression for this reaction Therefore, a soluble acetate salt, such as sodium acetate will release acetate ions into the solution, which a few of these will interact with water, forming unionized acetic acid and the hydroxide ion. Neutral. So we know that acids and Hydrated cation acts as an acid. PDF CHM 130 Acids, Bases, and Electrolytes Worksheet - gccaz.edu Na+ and the ions from water, I can write it as H ion and hydroxide ion, OH ion. So can you pause the video and do all the three steps, and then figure out what is the answer? So the first step is done. If something shiny has ever caught your eye, chances are it was made of metal! Procedure 1. NH4 is a weak acid, so it has a strong conjugate base. participate readily in proton-transfer reactions. It will dissociate to NH4+ and C2H3O2- both are a weak acid (NH4) and weak base (C2H3O2) so Ka of NH4 is ~ to the Kb of acetate (C2H3O2) anion so overall the pH value wouldclose to7.00or. Ka = (1 x 10-14)/(1.8 x 10-5) = 5.6 x 10-10. Createyouraccount. is as follows: Where Ka is the ionization constant of the acid form of the pair, Kb And now if you're guessing that a weak acid will react with a weak base to give me a neutral salt, then that's not completely right. {/eq} is described as a salt of weak acid that is acetic acid {eq}\rm \left( {C{H_3}COOH} \right) 3. According to the Bronsted-Lowry definition, an acid donates H+ to a base. Such a species is described as being . Select all that apply. HOWEVER! Strong Acid. A base is an acids chemical opposite.. Which of the following species could act as EITHER an acid OR a base? Kb = 5.9 x 10-10. HCl, this is a strong acid. Electrons are important for so many amazing things that happen around us, including electricity. Water I will write it as HOH. (Assume a solution is neutral if its pH is 7.00 plus-minus 0.05). The equation for (NH4)2SO4 is:H2SO4 + NH3 = (NH4)2SO4It is also useful to have memorized the common strong acids and bases to determine whether (NH4)2SO4 acts as an acid or base in water (or if it forms a neutral solution).Strong acids: HCl, H2SO4, HNO3, HBr, HI, HClO4Weak acids: HF, CH3COOH, H2CO3, H3PO4, HNO2, H2SO3Strong Bases: LiOH, NaOH, KOH, Ca(OH)2, Sr(OH)2, Ba(OH)2Weak Bases: NH3, NH4OHNote that we are talking about whether (NH4)2SO4 is an acid, base, or neutral when dissolved in water.- Salts of strong bases and strong acids: pH will remain neutral at 7.- Salts of weak bases and strong acids: pH less than 7 (acidic).- Salts from strong bases and weak acids: pH greater than 7 (alkaline).Based on these rules, the solution of (NH4)2SO4 dissolved in water is acid.For polyprotic acids (e.g. In an organic acid such as CH3CH2COOH, the ionizable H atoms is/are ______. Blank 4: acid. Determine if the salt NH4NO2 is acidic, basic or neutral. of the salt solution, whether the salt is an acidic, basic, or neutral Will the solution of the salt KF be acidic, basic, or neutral? Write a HC 2 H 3 O 2 (acetic acid), H 2 CO 3 (carbonic acid), NH 3 (ammonia), and H 3 PO 4 (phosphoric acid) are all examples of weak electrolytes. HSO4- has the lowest pKa value and is therefore the strongest acid with the lowest pH for solutions of the same concentration. bases, when they react, they neutralize each other's effect. Buffer solution balanced chemical equation - Math Index It will be hydrolyzed to produce an acidic solution. {/eq} and a weak base that is ammonium hydroxide {eq}\rm \left( {N{H_4}OH} \right) The ______ of dissociated HA molecules increases as a weak acid solution is diluted. The buffering range covers the weak acid pK a 1 pH unit. Sodium hydroxide is found in drain cleaner. The reaction will always favor the formation of the _____ acid and base. See Answer Is ammonium acetate (NH4C2H3O2) acidic, basic, or neutral in pH? Is NH4NO3 an acid, a base, or a salt? Direct link to mondirapaul26's post could someone please redi. It becomes basic in nature. We can easily tell the functional group -COO from this formula, but it is harder with C2H3O2. Which of the following compounds are strong acids? (This is all about the Bronsted theory of acid/bases). So you might recall that sodium hydroxide, this is a strong base. over here, acetic acid, you will recall that this is a weak acid. Classify the salt as acidic, basic, or neutral. This solution could be neutral, but this is dependent on the nature of their dissociation constants. This lesson focuses on acids and bases, how to identify them, and the characteristics they have. The approximate pH of these solutions will be determined using acid-base indicators. Blank 3: electrons In this video we saw that salts could be acidic, basic, or neutral in nature. Select all that apply. Salts can be formed from the reaction of a strong acid and a strong base, a strong acid and a weak base, a weak acid and a strong base or a weak acid and a weak base. 1)FeCl 2)CaBr2 3)NaF, Qualitatively predict the acidity/basicity of a 1.0 M solution of NH_4Br. Start with the pH that corresponds to the lowest [H3O+] at the top of the list. An aqueous solution of ammonium nitrate will be: a. acidic b. basic c. neutral d. either acidic or basic depending on the concentration of the ammonium nitrate e. need more information to be determined, What is the pH of a 0.0100 M ammonium formate solution? Which of the protons depicted in the structure of acetic acid is considered acidic or ionizable? Chemistry Examples: Strong and Weak Electrolytes - ThoughtCo Bronsted-Lowry base Hydrogen atoms bonded to carbon do not ionize. See salts, they can be both Although the pH values of many familiar solutions fall between 0 and 14, in reality pH values can fall outside this range. K+ and Br- are both neutral ions. An H+ ion is a hydrogen atom that has lost a(n) and is therefore just a(n) . that are acidic. A fund began operating on January |, 2005 ad used the investment year method t0 credit interest in the three calendar years 2005 t0 2007. Electricity is used in all aspects of your daily life, from powering your computers to your refrigerator. 0.00010 M If you are given a pH and asked to calculate [H+], you would _______. Consider the acid-base nature of ammonium chloride , NH4Cl, when it is dissolved in water. C2H3O2 is the strong conjugate base of a weak acid. [H3O+] = Kw[OH]Kw[OH-] = 1.010143.0104. donates an H+. Neutral solution c. Basic. It has a role as a food acidity regulator and a buffer. A salt consisting of a small, highly charged metal cation and the anion of a strong acid yields a(n) _____ solution. Mixture 2, reaction of a strong base and weak acid, also goes to completion. {/eq} is described as a salt of weak acid that is acetic acid {eq}\left( {C{H_3}COOH} \right) Is ammonium acetate (NH4C2H3O2) acidic, basic, or neutral in pH? Above 7, the substance is basic. The electronegativity of the central nonmetal atom Bases are molecules that can split apart in water and release hydroxide ions. NH4C2H3O2: NH4 is a weak acid, so it has a strong conjugate base. The 0.10 M solution will have a higher [H3O+]. Explain. A higher pKa value (which corresponds to a smaller Ka value) indicates a weaker acid. Select all that apply. Chem 112 Chapter 18 Flashcards | Quizlet So therefore we will have 4 possible types of acids and bases: 1. Given the acid-base equilibrium HCN (aq) + HCO3- (aq) CN- (aq) + H2CO3 (aq); pKa for HCN = 9.2 and pKa for H2CO3 = 6.3. Kb for ammonium hydroxide is 1.8 x 10-5 according to the following reaction. Are (CH3)3N and KHCO3 acid, base or neutral. Our experts can answer your tough homework and study questions. Classify an aqueous solution with OH- = 5.0 x 10-10 M as acidic, basic, or neutral. Instructions. A species that contains one or more atoms as well as one or more electron pairs can act as either an acid or a base, depending on the reaction. The percent dissociation of a weak acid increases as the initial concentration of the acid decreases. Blank 2: lone , nonbonded, nonbonding, non-bonding, non-bonded, unshared, or unbonded is the value of Ka for the anilonium ion? For the NH4^+, it is much easier to write BOTH as half reactions. CAMEO Chemicals. CH_3NH_2 is a weak base (K_b = 5.0 \times 10^{-4}) and so the salt, CH_3NH_3NO_3, acts as a weak acid. Once a pair of shoes is finished, it is placed in a box. Question = Is CF2Cl2polar or nonpolar ? Direct link to Abhinava Srikar's post at 7:17, Why is it NH4OH , Posted 2 years ago. C. Weakly basic. In both cases the equilibrium favors the dissociation products, and water is said to exert a effect on any strong acid or base. In the reaction of boric acid with water, we have B(OH) 3 + H 2 O B(OH)-4 + H +. As the initial concentration of a weak acid decreases, the percent dissociation of the acid _____. Reason: Select all the expressions that correctly express the relationship between Ka and Kb for a conjugate acid-base pair. acetate ions into the solution, which a few of these will interact with So the strong parent is the acid. A salt consisting of the anion of a weak _____ and the cation of a strong _____ yields a basic solution. An acid has a Ka of 1.34 10-6. 2. The second step was to find the nature of the given acid and base. Reason: What is the pH of a solution that is 0.032 M in NH_4Cl at 25^\circ C? Classify the salt as acidic, basic, or neutral. KCN is a basic salt. pH = -0.18 Select all that apply. All rights reserved. 4Au(s)+8NaCN(aq)+O2(g)+2H2O(l)4NaAu(CN)2(aq)+4NaOH(aq)4 \mathrm{Au}(\mathrm{s})+8 \mathrm{NaCN}(\mathrm{aq})+\mathrm{O}_{2}(\mathrm{g})+2 \mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \rightarrow 4 \mathrm{NaAu}(\mathrm{CN})_{2}(\mathrm{aq})+4 \mathrm{NaOH}(\mathrm{aq})4Au(s)+8NaCN(aq)+O2(g)+2H2O(l)4NaAu(CN)2(aq)+4NaOH(aq) If the mass of the ore from which the gold was extracted is 150.0 g, what percentage of the ore is gold? x = 1.1 x 10-5 M which is the H3O+ concentration. Which of the following options correctly reflect the steps required to calculate the pH of a solution containing 0.150 M KCN? So see, we have seen earlier Ammonium acetate | C2H4O2.H3N - PubChem then we get salt and water. Baking soda and ammonia, common household cleaners, are a. An aqueous solution of CH3NH3NO3 will be : - basic, because of the hydrolysis of NO3^- ions. HCN has a Ka value of 6.3 x 10-10 while acetic acid has a Ka value of 1.8 x 10-5. For example, for NH4C2H3O2. Some species can act as either an acid or a base depending on the other species present. Select all the statements that correctly describe this system. Question = Is SiCl2F2polar or nonpolar ? could someone please redirect me to the other videos which explain how and why the salts take on their dominant parent's properties? Select all that apply. Question: Is calcium oxidean ionic or covalent bond ? Preparing for discharge, which complementary and alternative medicine (CAM) therapies do you recommend to help her deal with her depression and cancer diagnosis? Example: Calculate the pH of a 0.500 M solution of KCN. Is there any chart which tells how strong or weak a base or acid is? The Ka value of ammonium ion (NH4^+) is 5.6 10^-10 , the - Toppr Ask How do you know? If the pH value of a solution of the compound is less than seven, then the compound will be acidic. Ka = 2.6 x 10-5. NH4+ is an acidic ion and Cl- is a neutral ion; solution will be acidic. Molecules that contain a polar multiple bond [HA] at equilibrium is approximately equal to [HA]init. Is SbCl5 ( Antimony pentachloride ) polar or nonpolar ? c. Basic. So this is the salt that is given. Will NH4NO3 form an acidic, basic, or neutral solution when dissolved in water? Which of the following are products of the reaction between the strong acid HCl and the strong base NaOH? In a Bronsted-Lowry acid-base reaction, the acid reacts to form its and the base will form its . Will a solution of the salt NH4Cl be acidic, basic, or neutral? functions as a weak base, the equilibrium constant is given the label Kb. Free Flashcards about CHEM 0330 Oxidation Numbers Oxygen has an oxidation number of -2 in almost all compounds. Blank 2: H or hydrogen The [H3O+] from water is negligible. So we have covered the how part of it in a separate video Which of the following is not true for a solution at 25C that has a hydroxide concentration of 2.5 10-6 M? So this time I can combine acetate ion and H ion, right? What The relative strength of an acid or base depends on how high its k a or k b value is, in this case, the k a value is far lower than the k b value, so the ammonia is more strongly basic than ammonium is acidic. Show your work. An acid is a molecule or ion capable of donating a, In chemistry, bases are substances that, in aqueous solution, are slippery to the touch, taste astringent, change the color of, In chemistry, a salt is an ionic compound that can be formed by the neutralization reaction of an acid and a base. reacting with a weak base to give us this salt. Usually only the first dissociation is taken into account in calculations involving polyprotic acids. HCN is a _____ acid than H2CO3, and the equilibrium as written will lie to the _____ and favor the formation of the _____. Ka for HCN is 5.8 x 10-10. Explain. This is our base. Which of the following statements accurately describe Bronsted-Lowry acid-base reactions? Which of the following statements describe the behavior of strong and weak acids (general formula HA) in aqueous solution? Depending upon the relative amounts of material, the nal solution may be composed of only strong base, only weak base, or a mixture of weak acid and weak base. And then, the third step was, from this nature, find out Question: Is B2 2-a Paramagnetic or Diamagnetic ? Calculate [OH-] in a solution that has [H3O+] = 6.7 x 10-2 M. Is the solution acidic or basic? Which of the following monoprotic acids would give a solution with the lowest pH at the same molarity? 2003-2023 Chegg Inc. All rights reserved. In the reaction of boric acid with water, we have B(OH) 3 + H 2 O B(OH)-4 + H +. Question = Is SCl6polar or nonpolar ? Examples of Lewis bases include NO2-, NH3, and H2O. Pour 60 mL of each of the solutions into separate 100 mL beakers. 5. Are you looking for the best essay writers offering their assistance on the web? Select all that apply. Blank 3: leveling or levelling. Question = Is if4+ polar or nonpolar ? So the first step was to figure out the parent acid and base that could react to form this salt, right? Explain. Acid dissociation is represented by the general equation HA + H2O (l) H3O+ (aq) + A- (aq). Determine whether an aqueous solution of NH4ClO is acidic, basic, or neutral. Which of the following options correctly describe the structural characteristics of strong and weak bases? In order to determine whether a solution of NH4C2H3O2 is acidic, basic, or neutral, what two values could be compared? going to take some salts, and try to identify their nature. Direct link to Shresth's post Hello, my query is that, , Posted 3 years ago. Why does the equivalence point occur at different pH values for the 2. Acid, base, and neutral compounds can be identified easily with the help of pH values and their dissociation constants. If the pH paper turns red, is the substance acidic, basic, or neutral? It goes under complete dissociation. .Salts are composed of related numbers of cations (positively charged ions) and anions (negative ions) so that the product is electrically neutral (without a net charge). A. The pH of an aqueous solution of the salt NaC_2H_3O_2 (sodium acetate) will _________. HSO4- (pKa = 1.99) Is HBrO4 an acid or base? For nonmetal hydrides, acid strength increases from left to right across a period and increases down a group. Will the salt ammonium iodide be acidic, basic, or neutral in a water solution? We have found out the parent base and acid for the given salt. This is the most wide-ranging of the three (i.e. Is a solution with a pH of 4 extremely acidic, moderately acidic, slightly basic, extremely basic, neutral? Then, depending on the Will a 0.1 m solution of NH4NO2 (aq) be acidic, basic, or neutral. Few H+ ions have come off the acid molecule in water. 2. down and give us ions, sodium ion and hydroxide ion. Let's see how to identify salts as neutral, acidic, or basic. Therefore, a soluble acetate salt, such as sodium acetate will release So over here we have a weak acid but a strong base. Explain. Best sights of the knowledge base for you. Acidic and Basic Salt Solutions - Purdue University Acids and Bases - Definition, Examples, Properties, Uses with - BYJUS Whichever is stronger would decide the properties and character of the salt. The notation BOH is incorrect. Is a 0.1 M solution of NH4Cl acidic or basic? Ammonium hydroxide is a weak base. If the Ka of the cation is greater than the Kb of the anion, a solution of the salt will be ______. let's not talk about this in this particular video. Question = Is C2Cl4polar or nonpolar ? Each day, parts department clerks review the open production orders and the MPS to determine which materials need to be released to production. All materials are barcoded. Let "x" represent the CHEM 105 Exercise Book 202302 | PDF | Salt (Chemistry) | Gases An example is sulfurous acid: A solution of sulfurous acid is dominated by molecules of H 2 SO 3 with relatively scarce H 3 O + and ions. Explain. How many atoms of mercury are present in the mercury vapor at 300.C300 .^{\circ} \mathrm{C}300.C if the reaction is conducted in a closed 15.0-L container? The equilibrium expresion for this reaction HCN is therefore weaker than H2CO3, and the reaction will favor the reactants. Name 4 weak acids and write their formulas. Direct link to Pi|GLA's post We write it like that so , Posted 2 years ago. a. Fe(NO3)3 b. NH4I c. NaNO2. Share this. A conjugate base may be positively charged, neutral, or negatively charged. At 7, neutral. Few ions Question = Is IF4-polar or nonpolar ? If yes, kindly write it. Direct link to Shweta Sharma's post CH3COOH it has a OH so wh, Posted 3 years ago. Blank 1: acceptor The scale goes from 0 to 14. For the following compound, predict whether the solution is acidic, basic, or neutral and why: NH_4Cl. pH = -log (1.5) = -0.18. Ammonium chloride (NH4Cl) Calcium nitrate (Ca (NaO3)2) Basic salt: The salt which is made from strong base and weak acid or on hydrolysis gives strong base and weak acid are called basic salt. Below 7, acidic. (1) What are the acid-base properties of the cation? Reason: ion formed to determine whether the salt is an acidic, basic, or neutral So let's do that. Can we figure out what is The cation has no impact on the pH of the solution. forms H3O+ ions in aqueous solution Buffer reaction equation - Math Concepts 2. englewood section 8 housing. The product of a Lewis acid-base reaction is called a(n) _____, which is a single species containing a new _____. That means our salt is also Acid and Base Chart Table of Acids & Bases - Sigma-Aldrich A salt consisting of the _____ of a strong acid and the _____ of a strong base yields a neutral solution. So we know that the ions of acid and base, they exchange position and we get salt and water. the nature of the salt. A- is a weaker base than OH-, and the equilibrium will lie to the left. with what we already know. If you're seeing this message, it means we're having trouble loading external resources on our website. Is NH4C2H3o2 acid or base? - Answers In order to calculate the percent composition of a compound such as oleic acid, one needs to look up _____. The Hydrolysis Reactions - Write net-ionic equations for the reaction Many cleaners contain ammonia, a base. {/eq} is dissolved in water, it gives ammonium hydroxide {eq}\rm \left( {N{H_4}OH} \right) The conjugate acid has one more H than its conjugate base. Solved 1) Is the solution of C5H5NHClO4 acidic, basic - Chegg b) Neutral because there is no hydrolysis. A base is a substance that will accept the acids hydrogen atom . Classify an aqueous solution with OH- = 7.4 x 10-4 M as acidic, basic, or neutral. (1.7 x 10-5)(Kb) = 1 x 10-14 Indicate whether the following salts will produce basic, acidic, or neutral pH when dissolved in water. The greater the value of Kb, the the base. {/eq}, both are acid and base. Reason: Example: What is the pH of a 0.400 M KBr solution? can combine with OH-, this will go with OH-, and I'll get NH4OH and this is going to be a base. Explain. Which of the following statements correctly describe a 1.0 M solution of KCN? Ammonium acetate {eq}\rm \left( {N{H_4}{C_2}{H_3}{O_2}} \right) So let's do that. We have a basic salt, and with this we have solved the problem. pH OF ACID SALT SOLUTIONS An acid salt is one that still contains H as part of the anion (HSO 4-, H 2PO 4-, HCO 3-, etc) Will the solution of such a salt be acidic due to the reaction: HCO 3-+ H 2O CO 3 2-+ H 3O + Ka2 = 4.7 x 10-11 Or will it be basic due to the reaction: HCO 3-+ H 2O H 2CO 3 + OH-Kb= K w = 1.0 x 10-14 Ka1 4.2x10-7 = 2.4 x 10-8 Relative Strength of Acids & Bases. out by yourself first? Select all that apply. May 10, 2008. All strong acids and bases appear equally strong in H2O. Answered: I need help with intro to chemistry | bartleby For example, the acetate ion is the conjugate base of acetic acid, a weak acid. A strong acid dissociates completely into ions in water. Suppose some ammonium sulfate was mixed with water. It exists as all ions. is nh4c2h3o2 an acid or base - neighborhoodphumy.com Instructions. Will an aqueous solution of KClO2 be acidic, basic, or neutral? In this equation, [HA] and [A] refer to the equilibrium concentrations of the Conjugate acid-base pairs (video) - Khan Academy acid-base pair used to create the buffer solution.Aug 24, 2021 488 Math Tutors Arrhenius base, accepts an electron pair. [OH-] = Kw[H3O+]Kw[H3O+] = 1.010141.5. This means that CH3COO- is a ______ base than F-. NaCN, 7. Make an "ICE" chart to aid in the solution. Question = Is if4+polar or nonpolar ? And Cl-, chloride ion, will go with H+ and we will get HCl and we know that is an acid. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Safety goggles. Direct link to rahulram05's post Is there any chart which , Posted 3 years ago. Make sure that you grasp the difference between this case and the previous example of the strong electrolyte Na 2 CO 3, which completely dissociates into ions. Weak electrolytes only partially break into ions in water. that salts are always neutral, then you are in for a surprise. But you know, if a strong acid is reacting with a weak base, then in that case the Write the formula of the conjugate base of the Brnsted-Lowry acid, HCO 3. c. Basic. While you may have never heard of darmstadtium, believe it or not, it has something in common with gold, oxygen, and lead. We saw that what will The compound ammonium acetate is a strong electrolyte. Calculate the percent by mass of phosphorous in sodium phosphate. Is the salt of a weak acid and a weak base also a weak electrolyte?