Question

When dilute sulphuric acid is added to a solid X, a gas Y is formed along with the formation of the salt of the solid. What could be X and Y?

a) X: zinc; Y: oxygen
b) X: zinc; Y: hydrogen
c) X: copper; Y: oxygen
d) X: Copper, Y: Hydrogen​

Answer 1

Answer:

The correct answer is option (b) X : zinc ; Y : hydrogen

Explanation:

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Answer 2

X and Y could be - b) X: zinc; Y: hydrogen

When dilute sulphuric acid is added to zinc, zinc sulphate is formed and hydrogen gas is liberated.

It is given that gas Y is formed in the reaction. Salt of the solid is formed, which is zinc sulphate.

The reaction of dil. sulphuric acid with zinc is given below:

$H_{2}SO_{4} + Zn$ → $ZnSO_{4}+H_{2}$

Reaction of copper with sulphuric acid will give water, copper sulphate and sulphur dioxide.