Write the balanced chemical equation for the action of concentrated sulphuric acid on copper metal.

Q. Write a balanced chemical equation for each of the following:
Action of concentrated sulphuric acid on Sulphur.

Q. Write balanced chemical equations for each of the following :
(i) The action of warm water on AlN.
(ii) The action of hot and concentrated nitric acid on copper.
(iii) The action of hydrochloric acid on sodium bicarbonate.
(iv) The action of dilute sulphuric acid on sodium sulphite.
(v) Preparation of ethanol from ethyl chloride.

Q.

Write the balanced chemical equations for the following conversions:
(a) Lead sulphate from lead nitrate solution and dilute sulphuric acid.
(b) Copper sulphate from copper and concentrated sulphuric acid
(c) Ammonium sulphate from ammonia and dilute sulphuric acid.

Q. Write down the word equation or balanced equation for the action of concentrated nitric acid on copper.

Q. Write the balanced equation for the following:
(a) Action of concentrated nitric acid on copper.
(b) Action of heat on AgNO₃.