Gce Model Questions Vol1 2019 Chemistry Question 6

Practice essay / theory question 6 from the 2019 Gce Model Questions Vol1 Chemistry examination. This question covers States of Matter .

Gce Model Questions Vol1 2019 Chemistry Essay / Theory
Topic: States of Matter
Question 6 GCE_MODEL_QUESTIONS_VOL1 • 2019 • CHEMISTRY • essay

A sealed rigid container holds 2.00 mol of an ideal gas at 300 K and 1.00 atm. The gas is heated to 450 K while the pressure is kept constant by allowing the piston to move freely. The gas in question is nitrogen (N₂) for which the van der Waals constants are a = 1.39 L² atm mol⁻² and b = 0.0391 L mol⁻¹. The student is asked to:

Question Parts

( a )
Using the ideal‑gas law, calculate the volume of the gas at 450 K (keep pressure at 1.00 atm).
( b )
Taking the same amount of gas, temperature and volume obtained in part (a), calculate the actual pressure using the van der Waals equation.
( c )
Explain why the vapour pressure of water at 100 °C is equal to the atmospheric pressure and how this relates to the phase change from liquid to vapour.
( d )
Discuss how the strength of intermolecular forces influences the boiling points of different substances.

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About This Question

This is Gce Model Questions Vol1 2019 Chemistry Question 6. It is one of the essay questions from the 2019 Gce Model Questions Vol1 Chemistry examination.

The question covers States of Matter .

View More Gce Model Questions Vol1 2019 Chemistry Questions More Gce Model Questions Vol1 Practice Questions Back to Questions

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