Neco 2022 Chemistry Question 30

Practice objective / multiple choice question 30 from the 2022 Neco Chemistry examination.

Neco 2022 Chemistry Objective / Multiple Choice Medium Difficulty
Question 30 NECO • 2022 • CHEMISTRY • objective

A substance boils at 300\,\text{°C} under 1\,\text{atm pressure}. Its enthalpy of vaporisation is \(\Delta H_{vap}=30.0\ \text{kJ mol}^{-1}\). Assuming the liquid‑vapour equilibrium follows the Clausius-Clapeyron equation, estimate the pressure (in atm) at which its boiling point will be 350\,\text{°C}. Use \(R=8.314\ \text{J mol}^{-1}\text{K}^{-1}\).

Answer Options

Correct Answer A. 1.66 atm
B. 2.10 atm
C. 0.85 atm
D. 1.20 atm
Correct Answer
A
Correct Option:
1.66 atm

About This Question

This is Neco 2022 Chemistry Question 30. It is one of the objective questions from the 2022 Neco Chemistry examination.

Difficulty level: Medium .

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