OCTCO/OCTF Exit Exam • Set 5 Question 15 of 30
What is the effect of intermolecular forces on vapor pressure?
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Direct Answer
Option B: Relatively strong force will decrease vapor pressure
Stronger intermolecular attractive forces in a liquid hold molecules more tightly, resulting in lower vapour pressure and higher boiling points.
All Options
A
Relatively strong force will increase vapor pressure
B
Relatively strong force will decrease vapor pressure
(Correct Answer)
C
Relatively weak force will decrease vapor pressure
D
Relatively weak force does not have any effect on vapor pressure
Detailed Explanation & Context
Stronger intermolecular attractive forces in a liquid hold molecules more tightly, resulting in lower vapour pressure and higher boiling points.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF).
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