What is the effect of intermolecular forces on vapor pressure?
Direct Answer
Option B: Relatively strong force will decrease vapor pressure
Stronger intermolecular forces (IMFs) increase the energy required for molecules to escape into the vapor phase. This reduces the concentration of molecules in the gas phase above the liquid, consequently decreasing the vapor pressure. This principle is vital for understanding cargo volatility and safe handling as per ISGOTT.
All Options
Detailed Explanation & Context
Stronger intermolecular forces (IMFs) increase the energy required for molecules to escape into the vapor phase. This reduces the concentration of molecules in the gas phase above the liquid, consequently decreasing the vapor pressure. This principle is vital for understanding cargo volatility and safe handling as per ISGOTT.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).
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