12.5 g of iron was dissolved in an excess of hydrochloric acid. calculate the volume of gas evolved in the reaction.
| August 22, 2021 | education
The reaction of interaction of a metal with an acid will take the form:
Fe + 2HCl = FeCl2 + H2 ↑
For every mole of iron, 1 mole of hydrogen gas is released.
The molar mass of Fe is 56 g, which means that 12.5: 56 = 0.223 mol of metal entered the reaction.
The volume of released hydrogen is 0.223 * 22.4 = 5 liters.
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