(a) In electrolysis of water, why is the volume of gas collected over one electrode double that of gas collected over the other electrode ? (b) (i) What is observed when a solution of potassium iodide is added to a solution of lead nitrate taken in a test tube ? (ii) What type of reaction is this ? (iii)Write a balanced chemical equation to represent the above reaction.

(a) In electrolysis of water, why is the volume of gas collected over

1.	(a) In electrolysis of water, why is the volume of gas collected over one electrode double that of gas collected over the other electrode ? (b) (i) What is observed when a solution of potassium iodide is added to a solution of lead nitrate taken in a test tube ? (ii) What type of reaction is this ? (iii)Write a balanced chemical equation to represent the above reaction.
Answer» (a) In electrolysis of water, why is the volume of gas collected over one electrode double that of gas collected over the other electrode ? (b) (i) What is observed when a solution of potassium iodide is added to a solution of lead nitrate taken in a test tube ? (ii) What type of reaction is this ? (iii)Write a balanced chemical equation to represent the above reaction.