Question

Propose the reaction between zinc and hydrochloric acid. Balance the equation and find out how

many grams of zinc was used to produce 10.3 L of H2 gas.

Answer 1

When Zinc reacts with hydrochloric acid the following reaction takes place:

Zn+2HCl→ZnCl

2

+H

2(g)

↑

Here 1 molecules of hydrochloric acid taking part in the reaction,the number of molecules of hydrogen produced in the reaction.

4molesofHCl×

2molesofHCl

1moleofH

2

=2molesofH

2