Waec Model Questions Vol1 2023 Chemistry Question 3

Practice objective / multiple choice question 3 from the 2023 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2023 Chemistry Objective / Multiple Choice Medium Difficulty
Question 3 WAEC_MODEL_QUESTIONS_VOL1 • 2023 • CHEMISTRY • objective
Waec Model Questions Vol1 2023 Chemistry Question 3 diagram

A gas syringe of 250 mL capacity is used to collect hydrogen gas over water at 25 °C. The total pressure inside the syringe is 760 mmHg and the vapour pressure of water at this temperature is 23.8 mmHg. Calculate the amount (in moles) of hydrogen gas collected.

Answer Options

A. 1.0×10⁻³ mol
Correct Answer B. 9.9×10⁻³ mol
C. 8.3×10⁻³ mol
D. 1.2×10⁻² mol
Correct Answer
B
Correct Option:
9.9×10⁻³ mol

About This Question

This is Waec Model Questions Vol1 2023 Chemistry Question 3. It is one of the objective questions from the 2023 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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