Neco Model Questions Vol1 2018 Chemistry Question 4

Practice objective / multiple choice question 4 from the 2018 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2018 Chemistry Objective / Multiple Choice Medium Difficulty
Question 4 NECO_MODEL_QUESTIONS_VOL1 • 2018 • CHEMISTRY • objective

The vapour pressure of a liquid X follows the relation \(\log_{10} P = A - \frac{B}{T}\) where \(P\) is in kPa and \(T\) in K. Experimental data give \(P = 12.0\) kPa at \(350\) K and \(P = 45.0\) kPa at \(380\) K. Using the Clausius-Clapeyron equation, estimate the enthalpy of vapourisation \(\Delta H_{vap}\) of X in kJ mol\(^{-1}\).

Answer Options

A. 35.2 kJ mol^{-1}
B. 62.8 kJ mol^{-1}
Correct Answer C. 48.7 kJ mol^{-1}
D. 55.1 kJ mol^{-1}
Correct Answer
C
Correct Option:
48.7 kJ mol^{-1}

About This Question

This is Neco Model Questions Vol1 2018 Chemistry Question 4. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support