When 15.0 g of zinc metal reacts with excess hcl, how many liters of h2 gas are produced at stp?

Question

Areli Cabrera

Chemistry

6 September, 10:32

When 15.0 g of zinc metal reacts with excess hcl, how many liters of h2 gas are produced at stp?

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Answers (1)

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Jamir Ward · Answer 1

M (Zn) = 65.4 g/mol

15.0g Zn*1mol Zn/65.4 g Zn = 15/65.4 mol Zn

Zn + 2HCl--->ZnCl2 + H2

by equation 1 mol 1 mol

from the problem 15/65.4 mol 15/65.4 mol

Molar volume of any gas under STP = 22.4 L/mol

15/65.4 mol H2 * 22.4 L/1 mol = 5.14 L H2