Calculate moles of H2 needed to form 2.25 moles HCI in the reaction H2+ Cl 2HCI.

Answer 1

I think your equation is incorrect. So, let's go with H₂ + Cl₂ ==> 2HCl

2.25 moles HCl x 1 mole H₂/2 moles HCl = 1.125 moles H₂ needed = 1.13 moles H₂ (3 significant figures)