If 1.0g Zn is dropped in a solution of concentrated HCl, how many moles of hydrogen gas is produced?

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



If possible, please provide the solution. Thank you!

1 Answer

  • 1 decade ago
    Favorite Answer

    No of moles of Zn: [Molar mass = 65.4 g.mol-1]

    No of moles = Mass/molar mass = 1/65.4 = 0.0153 mol

    From stoichiometry:

    1 mol Zn produces 1 mol H2

    So 0.0153 mol Zn produce 0.0153 mol H2 ==> Answer

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