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If 20 grams of zinc reacts with hydrochloric acid, how much zinc chloride is produced?
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If 20 grams of zinc reacts with hydrochloric acid, how much zinc chloride is produced?

User Swapnilagarwal
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1 Answer

3 votes
assuming there is excess acid, the equation for the reaction is Zn + 2HCl -> ZnCl2 + H2.
Mols of zinc = 20/65 (mass/relative atomic mass)
Ratio of Zn : ZnCl2 = 1 : 1
Hence mols of Zinc = mols of Zinc chloride
Mass of ZnCl2 = (20/65)(65+71)
= 41.8g
User Renay
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