Question

When metal X is treated with dilute acid Y, then a gas
Z evolved which burns readily by making a little
explosion.
1 Name any two metals which can behave like metal X.
2 Name any two acids which can behave like acid Y.
Name the gas Z.
Is the gas Z lighter than or heavier than air?
Is the reaction between metal X and dilute acid Y
exothermic or endothermic?
By taking a specific example of metal X and dilute
acid Y, write a balance chemical equation for the
reaction which takes place. Also indicate physical
states of the reactants and products.​

Answer 1

Answer:

a) 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)

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