Question

Predict whether a 0.10 M solution of the following salt is acidic, neutral, or basic.

A. LiCN

B. CH3CH2NH3Cl

C. NH4NO3

D. NH4CH3COO

E. NaCl

F. NaHSO4

G. NH4H2PO4

H. NH4HS

Answer 1

Answer

A) LiCN : Basic

B) CH3CH2NH3Cl : Acidic

C) NH4NO3 : Acidic

D) NH4CH3COO : Neutral

E) NaCl : Neutral

F) NaHSO4 : Acidic

G) NH4H2PO4 : Acidic

H) NH4HS : Basic

Explanation

Dissociation equation which give acidic or basic propery to the given salts

CN^-(aq) + H2O(l) <---------> HCN(aq) + OH^-(aq)

CH3CH2NH3⁺(aq) + H2O(l) <--------> CH3CH2NH2(aq) + H3O⁺(aq)

NH4⁺(aq) + H2O(l) <-------> NH3(aq) + H3O⁺(aq)

HSO4^-(aq) + H2O(l) <--------> SO4^2- (aq) + H3O⁺(aq)

H2PO4^-(aq) + H2O(l) <--------> HPO4^2-(aq) + H3O⁺(aq)

HS^-(aq) + H2O(l) <--------> H2S(aq) + H3O⁺(aq)

NaCl is a salt made by the reaction between strong acid and strong base , so the solution of NaCl would be neutral.

NH4CH3COO is a salt made by the reaction between weak acid(CH3COOH) and weak base (NH3) with equal strength ,so the solution of NH4CH3COO would be neutral.