Question

Mohan has three solutions P, Q and R having a pH of 13, 5 and 2 respectively. Which of the above solutions P, Q or R will liberate ammonia gas when it reacts with ammonium chloride?

Answer 1

'P' reacts with ammonium chloride to produce ammonia due to the fact that it is highly basic at pH-13.

\[\ce{NH4Cl + NaOH -> NH3 + NaCl + H2O}\]