Gce Model Questions Vol1 2021 Chemistry Question 33
Practice objective / multiple choice question 33 from the 2021 Gce Model Questions Vol1 Chemistry examination.
The liquid‑vapour equilibrium of a pure substance follows the Clausius-Clapeyron relation. Two experimental points on the coexistence curve are: at \(T_1 = 350\ \text{K}\), \(P_1 = 0.80\ \text{atm}\); at \(T_2 = 400\ \text{K}\), \(P_2 = 1.50\ \text{atm}\). Assuming the vapour behaves as an ideal gas and that the enthalpy of vapourisation \(\Delta H_{\text{vap}}\) is constant over this temperature range, calculate \(\Delta H_{\text{vap}}\) in kJ\,mol\(^{-1}\).
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About This Question
This is Gce Model Questions Vol1 2021 Chemistry Question 33. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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