Igcse Model Questions Vol1 2024 Chemistry Question 12

Practice objective / multiple choice question 12 from the 2024 Igcse Model Questions Vol1 Chemistry examination.

Igcse Model Questions Vol1 2024 Chemistry Objective / Multiple Choice Medium Difficulty

Question 12 IGCSE_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • objective

Igcse Model Questions Vol1 2024 Chemistry Question 12 diagram

In the laboratory apparatus shown, hydrogen gas is collected over water. The gas syringe indicates a volume of \(120\) mL. The temperature reading on the thermometer is \(25\) °C and the pressure gauge reads \(750\) mmHg. The water vapour pressure at this temperature is \(23.8\) mmHg. Assuming the gas behaves ideally, calculate the number of moles of hydrogen collected. Give your answer in scientific notation to three significant figures.

Answer Options

A. 3.87×10⁻³ mol

B. 5.12×10⁻³ mol

Correct Answer C. 4.69×10⁻³ mol

D. 4.69×10⁻⁴ mol

Correct Answer

Correct Option:

4.69×10⁻³ mol

About This Question

This is Igcse Model Questions Vol1 2024 Chemistry Question 12. It is one of the objective questions from the 2024 Igcse Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

View More Igcse Model Questions Vol1 2024 Chemistry Questions More Igcse Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows

Chat with Support