Waec Model Questions Vol1 2022 Chemistry Question 45

Practice objective / multiple choice question 45 from the 2022 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2022 Chemistry Objective / Multiple Choice Medium Difficulty
Question 45 WAEC_MODEL_QUESTIONS_VOL1 • 2022 • CHEMISTRY • objective
Waec Model Questions Vol1 2022 Chemistry Question 45 diagram

In the laboratory set‑up shown, hydrogen gas is collected over water in a eudiometer. The volume of gas collected is 125 mL at 25 °C and atmospheric pressure of 760 mmHg. The vapour pressure of water at 25 °C is 23.8 mmHg. Calculate the number of moles of hydrogen gas collected.

Answer Options

A. 4.80×10⁻³ mol
B. 5.12×10⁻³ mol
Correct Answer C. 4.95×10⁻³ mol
D. 5.00×10⁻³ mol
Correct Answer
C
Correct Option:
4.95×10⁻³ mol

About This Question

This is Waec Model Questions Vol1 2022 Chemistry Question 45. It is one of the objective questions from the 2022 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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