Question

When 2 mL of sodium hydroxide solution is added to few pieces of granulated zinc in a test tube and then warmed, the reaction that occurs can be written in the form of a balanced chemical equation as :

Translate the following statement into a balanced chemical equation. "When barium chloride reacts with aluminium sulphate, aluminium chloride and barium sulphate are formed." State the type of this reaction giving reason to justify your answer.

Define a decomposition reaction. Write chemical equation for the reaction that occurs when lead nitrate is heated strongly in a boiling tube.

In electrolytic decomposition of water two gases are liberated at the electrodes. Give the mass ratio of the gas liberated at the cathode and at the anode.