Question

how many moles of H2 gas evolved when 13 grams of zinc granules dipped in to HCl?​

Answer 1

Answer:

0.1 mole of h2 gas evolved when 13 grams of zinc granules dipped into HCL

Answer 2

Answer:

Zn+2HCl--->ZnCl2+H2

Molar mass of Zn=65..

No. of moles of Zn used=13/65

=0.2 moles...

Stoichiometric ratio of H2:Zn is 1:1

So, 0.2 moles of H2 are produced...