6. Which one of the following will form an acidic solution in water? (Circle the
ID: 303732 • Letter: 6
Question
6. Which one of the following will form an acidic solution in water? (Circle the best answer) A) NH4CI 7. Which of the following bases is the STRONGEST? The bas is ollowed by its K (circle the best answer) (CH3CH2)2NH, 8.6 x 10-3 8. Which one of the following is the weakest acid? B) NaF c) Lil D) KNO3 CH3NH2,4410-4 CgH5NH2, 4,0 x 10-10 NH, 1.76 10-5 E) Acetic acid (Ka -1.8103 A) Predict whether the following salts will form acidic, basic, or neutral solutions B) Write a net ionic equation (hydrolysis equation) to support the answer 9. KIO a) Basic NaCN a) NH4Br a) IC b) KCIO a) b)?
Explanation / Answer
6) Answer: NH4Cl(aq) -----> NH4+(aq) + Cl(aq)
NH4+(aq) + H2O(l) -----> NH4OH(aq) + H3O+(aq)
7) largest the Kb value,highest the basicity.
answer: (CH3CH2)2NH,8.6*10^-3
8) Lowest the Ka vlaue, least the acidity.
answer: D) HCN(Ka = 4.9*10^-10)
9) KIO3 a) basic
b) IO3^-(aq) + H2O(l) ----> HIO3(aq) + OH^-(aq)
NaCN
a) Basic
b) CN^-(aq) + H2O(l) ------> HCN(aq) + OH^-(aq)
NH4Br
a) acidic
b) NH4+(aq) + H2O(l) -----> NH4OH(aq) + H3O+(aq)
KClO4
a) Neutral
b) H+ + OH- ----> H2O
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