If 0.30 mol of Zn are added to HCl containing 0.52 mol of HCl , how many moles of hydrogen are produced

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If 0.30 mol of Zn are added to HCl containing 0.52 mol of HCl , how many moles of hydrogen are produced

[From: ] [author: ] [Date: 12-06-27] [Hit: ]

52 moles of HClproduce0.52/2= 0.26 moles of gas H2-Your eqn is wrong - should be 2HCl. Therefore, mol of H2 = 0.52/2 = 0.......

Zinc and HCl react according to the following reaction:
Zn(s) + HCl(aq)-------->ZnCl2(aq) + H2(g)

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you have written with a mistake your reaction .
The good away is

Zn(s) + 2 HCl(aq)-------->ZnCl2(aq) + H2(g)

so you need 2 moles of HCl to neutralize 1 mole of Zn
So 0.52 moles of HCl produce 0.52/2= 0.26 moles of gas H2

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Your eqn is wrong - should be 2HCl. Therefore, mol of H2 = 0.52/2 = 0.26

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