When aluminum metal reacts with HCl(aq), AlCl3(aq) and hydrogen gas are producedIf 3.0 grams of Al undergo this reaction with an excess of hydrochloric acid, and the yield of the reaction is 90%, how many grams of hydrogen gas are produced?A) 0.30 gB) 0.33 gC) 0.66 gD) 1.33 gE) 3.30 g
A 0.3g Kenny's method is right but the question tells you the yield is 90%If you repeat Kenny's method, without decimal rounding, and multiply by 0.9 at the end to account for the yield, you get 0.3 so the answer is A: 3g Al (1 mol Al / 27g Al) (3 mol H2 / 2 mol Al) (2g H2 / 1 mol H2) 0.9 0.3
