Question

What mass of zinc is required to produce 0.2 mole of H2 gas on reaction with dilute HCl

Answer 1

Answer:13 g

Explanation:

Zn +2HCl = ZnCl2 +H2

1 mole. Zn forms 1 mole of H2

Zn moles to form 0.2 mole of H2 ?

0.2. Moles of zn required

Mass of zinc

. =moles X molecular mass

= 0.2x 65.3= 13.06 gm