Question

16. A student wants to make a basic salt. which of the following pairs of acid and base should he use.
(a) HCI + NaOH
(b) H2CO3 + NaOH
(c) HCI+NH,OH
(d) H2SO4 + KOH​

Answer 1

Answer:

He should be using HCL + NaOH ( a )

Answer 2

we have to choose one of the following pairs of acid and base :

(a) HCI + NaOH

(b) H2CO3 + NaOH

(c) HCI+NH₄OH

(d) H2SO4 + KOH​

answer : option (b) H₂CO₃ + NaOH

explanation : A students wants to make a basic salt, doesn't he ?

he needs to follow the fundamental concepts of forming salt. those are..

• A neutral salt can be formed from the neutralization of strong acid and strong base.
• A basic salt can be formed from the neutralization of strong base and weak acid.
• An acid salt can be formed from the neutralization of strong acid and weak base.

in short,  Basic salt = strong base + weak acid

here, option (a) strong acid + strong base

(b) weak acid + strong base

(c) strong acid + weak base

(d) strong acid + strong base

here you see, only option (b) is the combination of strong base and weak acid. therefore the correct option is (b)