What mass of hydrogen is formed by the interaction of sulfuric acid with 25 g of zinc, containing 15% of impurities.
| April 25, 2021 | education
The mass of pure zinc: 25 * (100% – 15%) / 100% = 25 * 0.85 = 21.25 g, which corresponds to 21.25 / 65 = 0.33 mol. As seen from the reaction equation:
Zn + H2SO4 = ZnSO4 + H2
the same amount of hydrogen will be released, or 0.66 g.
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