Experiment 8a Prelab Assignment Review Chapters 16 & 17, especially section 16.1

Question

Experiment 8a Prelab Assignment Review Chapters 16 & 17, especially section 16.10 of Kotz et al. 2. Answer the following questions for these salts: Ca(OCI), Ba(NO) and NH Br: a. Write an acid base reaction for each of the salts listed above in which the salt is the pro Its listed above in which the salt is the product in the neutralization reaction. b. Using your equations in part a., identify the acids and bases as being strong or weak. SA (Strong Acid), SB (strong base), WA (weak acid) and WB (weak base) below the respective species. c. Using the information in part b., tell whether each cation and anion in each salt is i.) a spectator ion (S) or ii.) an ion that is capable of hydrolysis (H). d. For each ion capable of hydrolysis, write the correct hydrolysis equation. Using the literature value for the K, for HC2H4O2, calculate the theoretical K, for the CzH30,' ion and the theoretical pH of a 0.1M solution of sodium acetate. Using the literature K, for the NHa* ion, calculate the theoretical pH of a 0.1M solution of ammonium chloride additionally determine the hydroxide concentration. How would the pH of a 0.1 M solution of NaC-H302 compare with that of a 0.1 M solution of KC2H3O2? Explain. Complete Table 8a. 1 Indicating if the solution is either A acidic, B basic or N neutral and classify the ions e BE

Explanation / Answer

2-a)-Ba(NO3)2+NH4Br--->NH4NO3+BaBr2

b)- W.A S.A salt

c)-An ion capable of hydrolosis

Bariumbromide is capable of hydrolosis

NH4Br is also react in hydrolosis and similarly ..

3)-Not possible to answer because literature value is not given

4)-same as above

pH of 0.1 m Nac2H3o2=-log[H+]

-log[0.1]

pH=-[log1-log10]

=1 ;log1=0 log 10=1

pH of Kc2h3o2=-log[0.1]

pH=-log[0.1]

pH=1

ph of Nac2h3o2=pH of Kc2h3o2

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