Question

2.6 gm of zinc is treated with excess dilute sulphuric acid how many gram of oxygen combines with the evolved hydrogen ​

Answer 1

Explanation:

The balanced chemical equation for the reaction of zinc with sulfuric acid is as shown below:

Zn+H

2

SO

4

→ZnSO

4

+H

2

(g)↑

1 mole of zinc reacts with 1 mole of sulfuric acid to produce 1 mole of hydrogen.

The balanced chemical equation for the reaction of zinc with sodium hydroxide is as shown below:

Zn+2NaOH+2H

2

O→Na

2

[Zn(OH)

4

]+H

2

(g)↑

1 mole of zinc reacts with 2 moles of sodium hydroxide to produce 1 mole of hydrogen.

Thus, the ratio of volumes of hydrogen evolved is 1:1.