
Concept explainers
Interpretation:
The balanced chemical equation for reaction between Mg and HCl needs to be determined. The volume of hydrogen gas needs to be determined after balancing the equation.
Concept Introduction:
Magnesium metal reacts with hydrochloric acid to produce hydrogen gas and magnesium chloride solution.

Answer to Problem 7RQ
The balanced chemical equation is-
The volume of hydrogen gas is 10.05 litre.
Explanation of Solution
Given information: Mass of magnesium is 10 g
Pressure of hydrogen gas is 1.00 atm
Temperature is 25 °C or, 298 K
Calculation:
The balanced chemical equation is-
Number of moles of magnesium can be calculated as follows:
From balanced reaction, 1 mol of Mg gives 1 mol of hydrogen gas.
So, number of moles of hydrogen will be 0.412 mol.
The ideal gas equation is represented as follows:
Or,
Chapter 13 Solutions
World of Chemistry
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