# Calculate the amount of hydrogen released if it is known that 20 g of Mg and hydrochloric acid have entered into the reaction

October 14, 2021 | education

| 1. The reaction between magnesium and hydrochloric acid proceeds according to the equation:

Mg + 2HCl = MgCl2 + H2 ↑;

2.Calculate the chemical amount of reacted magnesium:

n (Mg) = m (Mg): M (Mg) = 20: 24 = 0.8333 mol;

3.determine the amount of hydrogen released as a result of the reaction:

n (H2) = n (Mg) = 0.8333 mol;

4.calculate the volume of hydrogen:

V (H2) = n (H2) * Vm = 0.8333 * 22.4 = 18.67 liters.

Answer: 18.67 liters.

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