Waec Model Questions Vol1 2022 Chemistry Question 2
Practice objective / multiple choice question 2 from the 2022 Waec Model Questions Vol1 Chemistry examination.
5.00 g of magnesium reacts with excess HCl to produce hydrogen gas. The gas is collected over water at 25 °C and a total pressure of 750 mmHg, giving a dry H₂ volume of 1.80 L. What is the percent yield of H₂? (M(Mg)=24.305 g·mol⁻¹, vapor pressure of water at 25 °C = 23.8 mmHg, R=0.082057 L·atm·K⁻¹·mol⁻¹)
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This is Waec Model Questions Vol1 2022 Chemistry Question 2. It is one of the objective questions from the 2022 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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