Calculate how much hydrogen will be released when interacting with 10 g calcium water.
| February 5, 2021 | education
The reaction of calcium with water is described by the following chemical equation:
Ca + 2H2O = Ca (OH) 2 + H2;
Let’s determine the molar amount of a substance in 10 grams of calcium:
The molar mass of calcium is 40 grams / mol.
The amount of substance in 10 grams will be N = 10/40 = 0.25 mol.
When 1 mole of calcium reacts, 1 mole of hydrogen is formed.
Therefore, when reacting with 0.25 mol of calcium, 0.25 mol of hydrogen is formed.
One mole of ideal gas under normal conditions takes up a volume of 22.4 liters.
Therefore, 0.25 mol of hydrogen will occupy a volume of 22.4 x 0.25 = 5.6 liters.
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