(a) Give the pH value of pure water. Does it change if common salt is added to it?
(b) Classify the following solutions as acids, bases or salts.
Ammonium hydroxide, barium chloride, sodium chloride, sodium hydroxide, H2SO4 and HNO3.
Statement 1: Reaction of hydrochloric acid with a base forms salt and water.
Statement 2: Reaction of hydrochloric acid with sodium hydroxide forms sodium chloride and water.