Master Class For Precipitation Reaction

Master Class on Chemical Kinetics

On adding a drop of barium chloride solution to an aqueous solution of sodium sulphite, white precipitate is obtained : (a) Write a balanced chemical equation for the reaction involved. (b) What other name can be given to this precipitation reaction (c) On adding dilute hydrochloric acid to the reaction mixture, white precipitate disappears. Why ?

What do you mean by a precipitation reaction? Explain by giving examples.

Which of the following yield yellow precipitate on reaction with I_(2) and NaOH ?