Question

Solution P has a pH of 13, solution Q has a pH of 6 and solution R has a pH of 2. Which solution:

1. will liberate ammonia from ammonium sulphate on heating?
2. is a strong acid?
3. contains molecules as well as ions?

Answer 1

1. Solution P having pH value 13 will liberate ammonia gas from ammonium sulphate, as ammonia can be released from ammonium sulphate solution by a strong base.
2. Solution R with pH 2 is a strong acid.
3. As Q with pH 6 is a weak acid and will not be able to completely dissociate into ions. Hence, will have molecules and ions both.