Gce Model Questions Vol1 2025 Chemistry Question 28

Practice objective / multiple choice question 28 from the 2025 Gce Model Questions Vol1 Chemistry examination.

Gce Model Questions Vol1 2025 Chemistry Objective / Multiple Choice Medium Difficulty
Question 28 GCE_MODEL_QUESTIONS_VOL1 • 2025 • CHEMISTRY • objective

For a certain substance X, the vapour pressure is 0.80 atm at 350 K and 1.20 atm at 370 K. Assuming the vapour behaves as an ideal gas and the liquid volume is negligible, estimate the enthalpy of vaporisation \(\Delta H_{vap}\) in kJ mol^{-1} using the Clapeyron equation.

Answer Options

A. 27.0 kJ mol^{-1}
B. 18.4 kJ mol^{-1}
C. 24.3 kJ mol^{-1}
Correct Answer D. 21.6 kJ mol^{-1}
Correct Answer
D
Correct Option:
21.6 kJ mol^{-1}

About This Question

This is Gce Model Questions Vol1 2025 Chemistry Question 28. It is one of the objective questions from the 2025 Gce Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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