Question

Give the name and formula of an ore of zinc and reactions involved in the following steps :(a) roasting of the ore. (b) Reduction of the zinc compound which is the product of the above reaction. (c) State one large scale use of zinc.​

Answer 1

a ZnS Zinc Sulphide

b ZnO Zinc Oxide

ZINC USED TO MAKE POWDERS

Answer 2

Zinc blende - ZnS

Roasting refers to the process of heating the sulphide ore of a metal in excess air.

A. 2ZnS + 3O2 ⇒2 ZnO + 2SO2

B. Zinc oxide can be made to react with hydrogen gas

ZnO + H2 ⇒ Zn + H20

Zinc oxide gets reduced to zinc metal.

C. A layer of zinc can be coated on another metal to prevent the metal from corroding( oxidation) , this process is called galvanisation.