UPSC Combined Geo-Scientist, Mains · 2019 · Mains Paper II
Q2(b). Volatility of ether and ethanol
Question
Why is dimethyl ether more volatile than ethanol although they have the same molar mass?
Answer in brief
Ethanol self-associates by hydrogen bonding, whereas dimethyl ether lacks an O–H donor and has weaker cohesive interactions.
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CoversVolatility of etherethanolIntermolecular forces
All parts of Question 2
- 2(a) Normalisation of the Maxwell distribution5 marks
- 2(b) Volatility of ether and ethanol5 marks