(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.
Rohit added small amount of common salt to water taken in a graduated cylinder, on dissolution there was no detectable change in the level of water. Explain why is it so?