Gce Model Questions Vol1 2021 Chemistry Question 45

Practice objective / multiple choice question 45 from the 2021 Gce Model Questions Vol1 Chemistry examination.

Gce Model Questions Vol1 2021 Chemistry Objective / Multiple Choice Medium Difficulty
Question 45 GCE_MODEL_QUESTIONS_VOL1 • 2021 • CHEMISTRY • objective

The vapour pressure of a liquid is \(45\ \text{kPa}\) at \(298\ \text{K}\) and \(120\ \text{kPa}\) at \(318\ \text{K}\). Assuming the enthalpy of vapourisation remains constant over this range, estimate the boiling point of the liquid at a pressure of \(101.3\ \text{kPa}\).

Answer Options

Correct Answer A. \(T_{bp}\approx 314\ \text{K}\) (≈ \(41\ ^\circ\text{C}\))
B. \(T_{bp}\approx 300\ \text{K}\) (≈ \(27\ ^\circ\text{C}\))
C. \(T_{bp}\approx 350\ \text{K}\) (≈ \(77\ ^\circ\text{C}\))
D. \(T_{bp}\approx 328\ \text{K}\) (≈ \(55\ ^\circ\text{C}\))
Correct Answer
A
Correct Option:
\(T_{bp}\approx 314\ \text{K}\) (≈ \(41\ ^\circ\text{C}\))

About This Question

This is Gce Model Questions Vol1 2021 Chemistry Question 45. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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