Question

8. When metal 'X' is treated with dil. acid 'Y', then gas 'Z' is evolved which burns read
by making a little explosion.
1) Name any two metals which can behave like metal 'X'.
ii) Name the gas 'Z'.
iii)Is the gas 'Z' lighter (or) heavier than air ?
iv)Is the reaction between metal 'X' and dilute acid 'Y' exothermic or endothermic​

Answer 1

Explanation:

Two metals that can behave like metal X are Zinc and Iron.

b) Two acids which can behave like acid Y are dilute hydrochloric acid and dilute sulphuric acid

c) The gas Z is Hydrogen.

d) The gas Z lighter is lighter than air.

e) The reaction between metal X and dilute acid Y is exothermic.

f) Suppose metal X is zinc (Zn) and acid Y is dilute hydrochloric acid (HCl)

Zn(s)+2HCl(aq)→ZnCl

2

(aq)+H

2

(g)