Which of the following salts will be acidic?

Question

A. KClO4

B. NH4Br

C. NaHCO3

D. Na2C2O4

Answer 1

Hydrolysis of salts.

 

Because NH4Br is made from a weak base (NH4OH) and a strong acid (HBr), the hydrolysis of the salt will have an acidic pH.  Answer would be (B), NH4Br.  All others will have an alkaline pH, or will be neutral.