Question

Amount of zinc necessary to produce 224ml of h2 by the reaction with an acid will be

Answer 1

Explanation:

Zn +2HCl =>ZnCl2 + H2

So one mole of zinc produces one mole of H2 .So 224 ml is equal to 224/22400 moles of H2 hence 0.01 moles of H2 is produced so 0.01 moles of Zinc are to be consumed. Hence weight of 0.01 moles of Zinc => 0.01 × 65.38 grams =>0.6538 grams. Hope it helps you.