Neco Model Questions Vol1 2023 Chemistry Question 27

Practice objective / multiple choice question 27 from the 2023 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2023 Chemistry Objective / Multiple Choice Medium Difficulty
Question 27 NECO_MODEL_QUESTIONS_VOL1 • 2023 • CHEMISTRY • objective

The normal boiling point of substance A is 78.0 °C at 1 atm. Its enthalpy of vaporisation is 30.3 kJ mol⁻¹ (assumed constant). Estimate the boiling point of A at 0.5 atm using the Clausius-Clapeyron equation.

Answer Options

Correct Answer A. 56 °C (approximately)
B. 62 °C (approximately)
C. 70 °C (approximately)
D. 48 °C (approximately)
Correct Answer
A
Correct Option:
56 °C (approximately)

About This Question

This is Neco Model Questions Vol1 2023 Chemistry Question 27. It is one of the objective questions from the 2023 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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