Question

State what will be the effect of each of the following solution on blue litmus –

(1) K2CO3 soln

(2) KCl soln.

(3) NH4NO3

Answer 1

1. K2CO3 is a salt of a strong base (KOH) and weak acid (H2CO3 ). Hence its aqueous solution will be basic in nature. It will have no effect on blue litmus solution.

2. KCl is a salt of a strong acid (HCl) and a strong base (KOH). Hence its aqueous solution will be neutral in nature. It will have no effect on blue litmus solution.

3. NH4NO3 is a salt of a strong acid (HNO3) and weak base (NH4OH). Hence its aqueous solution will be acidic in nature. It will turn blue litmus solution red.