Question

​.A metal A reacts with steam to form an oxide B which is yellow when hot and white on cooling and liberates a gas C.i) Identify A, B and C.

Answer 1

Answer:

The metal A is Zinc.

The oxide B is Zinc Oxide.

The gas C which is liberated is Hydrogen.

Explanation:

Zinc reacts with steam to form zinc oxide which is yellow when hot and white when cold. It also forms Hydrogen gas in the process.

Overall reaction: $Zn + H_{2}O$ ⇒ $ZnO + H_{2}$