Question

Identify the acidic salt among these : NH4Cl, K2 SO4, NaCl and Na2CO3.

Answer 1

the salt solution of NH4Cl gives acidic solution it is formed by a weak base and strong acid. The ionisation of a weak base in not complete,whereas strong acid ionises completely.hence there are more H+ ions than OH-,making solution acidic.

NaCl and K2SO4 neutral salts.

Na2CO3 formed by strong base and weak acid so it's basic salt.