Igcse Model Questions Vol1 2020 Chemistry Question 4

Practice practical question 4 from the 2020 Igcse Model Questions Vol1 Chemistry examination. This question covers Mole Concept, Ideal Gas Law, Gas Collection over Water .

Igcse Model Questions Vol1 2020 Chemistry Practical

Topics: Mole Concept Ideal Gas Law Gas Collection over Water

Question 4 IGCSE_MODEL_QUESTIONS_VOL1 • 2020 • CHEMISTRY • practical

A gas was collected over water at 25 °C. The following data were recorded: • Volume of gas collected: 250.0 mL • Total pressure (barometer reading): 101.3 kPa • Temperature: 25 °C • Water‑vapour pressure at 25 °C: 3.17 kPa • Mass of the dry gas after passing through a drying tube: 0.436 g Using the ideal gas law, answer the questions below.

Question Parts

( a )

Calculate the number of moles of gas collected. Show all steps.

( b )

Determine the molar mass of the gas (in g mol⁻¹).

( c )

Identify the gas from the following list: O₂, N₂, CO₂, H₂. Give one piece of evidence that supports your identification.

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About This Question

This is Igcse Model Questions Vol1 2020 Chemistry Question 4. It is one of the practical questions from the 2020 Igcse Model Questions Vol1 Chemistry examination.

The question covers Mole Concept, Ideal Gas Law, Gas Collection over Water .

View More Igcse Model Questions Vol1 2020 Chemistry Questions More Igcse Model Questions Vol1 Practice Questions Back to Questions

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