Which of these has the lowest vapor pressure at 25 oC? A) C5H12 B) CH3(CH2)4OH C)...

Question

Question

Which of these has the lowest vapor pressure at 25 oC?

A) C5H12
B) CH3(CH2)4OH
C) CH3CH2CH2OCH2CH3

science chemistry

Answer 1

Answer #1

Vapour pressure is lowest for compound which has strongest intermolecular force

A has London-Dispersion force

B has Hydrogen bonding beside dipole-dipole interaction and London-Dispersion force

C has dipole-dipole interaction and London-Dispersion force

So, B has strongest intermolecular force

So, this will have lowest vapour pressure

Answer: B

Answer 2

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