Igcse Model Questions Vol1 2022 Chemistry Question 21
Practice objective / multiple choice question 21 from the 2022 Igcse Model Questions Vol1 Chemistry examination.
In the laboratory apparatus shown, hydrogen gas is collected over water at 25 °C. The volume of gas collected is 125 mL and the total pressure measured is 760 mmHg. The vapour pressure of water at 25 °C is 23.8 mmHg. Given the molar mass of H₂ is 2.016 g mol⁻¹, calculate the mass of hydrogen collected. Use the ideal‑gas equation (PV=nRT) with (R=0.0821\,\text{L·atm·mol}^{-1}\text{·K}^{-1}).
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About This Question
This is Igcse Model Questions Vol1 2022 Chemistry Question 21. It is one of the objective questions from the 2022 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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