HARDMCQ SINGLEJEE Advanced ChemistryPhysical ChemistryIonic equilibriumAchiever Section

Assertion: When aqueous, solution of CH₃COONH₄ is diluted, then its degree of hydrolysis increases. Reason:  Ammonium  acetate  is  the  salt  of  weak  acid and  weak  base;  its  degree  of  hydrolysis  does  not depend on the concentration.

A.A
B.B
C.C
D.D✓ Correct
Explanation

3 4 3 4 CH COONH CH COO NH → Both will undergo hydrolysis 3 4 2 3 4 CH COO NH H O CH COOH NH OH w h a b K K K K x 3 4 2 3 4 Thus,      CH COO NH H O CH COOH NH OH initial C C At equi.   C Ch      C Ch Ch                 Ch Where  h → degree of hydrolysis 2 2 h 2 2 2 h h C h K C 1 h 2h h K 1 h h K 1 h Thus,  degree  of  hydrolysis  is  independent  of concentration of salt. Since, the degree of hydrolysis does not depend on the concentration  of  the  salt,  dilution  of  the  solution  will not affect the degree of hydrolysis. S

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