Waec Model Questions Vol1 2021 Chemistry Question 13

Practice objective / multiple choice question 13 from the 2021 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2021 Chemistry Objective / Multiple Choice Medium Difficulty
Question 13 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • CHEMISTRY • objective

When 5.00 g of aluminium is reacted with excess hydrochloric acid, 4.50 L of hydrogen gas is collected at 25 °C and 1.00 atm. Calculate the percent yield of hydrogen gas. (R = 0.0821 L·atm·mol⁻¹·K⁻¹)

Answer Options

A. 78.9 %
Correct Answer B. 66.2 %
C. 62.5 %
D. 55.0 %
Correct Answer
B
Correct Option:
66.2 %

About This Question

This is Waec Model Questions Vol1 2021 Chemistry Question 13. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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