Question

An excess of magnesium reacts with 200.0 mL of 2.00M hydrochloric acid solution to produce

magnesium chloride and hydrogen gas. How many milliliters of hydrogen gas will you produce at STP

____Mg+___HCL>___MgCl2+____H2

Answer 1

Answer: 4480 mL if need correct sig figs its 4.48 X 10^3 mL

Step-by-step explanation:

1) solve for moles HCl

2.00 X 0.2 =0.400 moles HCl

2) now do stoichiometry using balanced chemical equation

___Mg + 2 HCl ---> MgCl2 + H2

0.400 moles HCl X (1 mole H2/2 Moles HCl) X (22400ml/ 1mole) =4480 mL H2