# Solution P has a pH of 13. Solution Q has a pH of 6 and solution R has a pH of 2. Which solution: (a) will liberate ammonia from ammonium sulphate on heating? (b) is a strong acid? (c) contains molecules as well as ions?

The solution is as follows:

1. The solution of P when heated with ammonium sulphate liberates ammonia. The reaction is as follows:

(NH4)2SO4(aq) + BOH (aq) $\underset{∆}{\to }$ 2 NH3(g) + BSO4(aq) + H2O

2. As solution R has pH 2, it is the strongest acid.

3. Solution Q is slightly acidic, thus it has only molecules and ions.

• 1
What are you looking for?