Question

What happens when a mixture of sodium sulphate, lime stone and coke is heated in a furnace ?

• A. Black ash containing sodium carbonate and calcium sulphide is formed.
• B. Carbon dioxide gas is liberated.
• C. Sodium carbonate and calcium sulphate is formed.
• D. (1) and (2) both.

Answer 1

Answer: (A)

Black ash containing sodium carbonate and calcium sulphide is formed.

Answer 2

Na2SO4 + CaCO3 + 4C $\underset{blackash}{\overset{Na_{2}CO_{3} + CaS}{︸}}$+ CO