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 Form 3 Chemistry Questions and Answers on The Mole

Zinc metal and hydrochloric acid reacts according to the following equation. #Zn(s)+2HCl(aq) rightarrow ZnCl_2(aq) +H_2(g)#
1.96g of Zinc metal were reacted with #100cm^(3)# of 0.2M hydrochloric acid.
(a) Determine the reagent that was in excess.
(b) Calculate the total volume of hydrogen gas that was liberated at S.T.P.[Zn=65.4,molar gas volume =22.4 litres at S.T.P]

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