Question

For which of the following parameters the structural isomers
C₂H₅OH and CH₃OCH₃ would be expected to have the same
values?(Assume ideal behaviour)
(a) Boiling points
(b) Vapour pressure at the same temperature
(c) Heat of vaporization
(d) Gaseous densities at the same temperature and pressure

Answer 1

For Gaseous densities at the same temperature and pressure the following parameters the structural isomers

the following parameters the structural isomersC₂H₅OH and CH₃OCH₃ would be expected to have the same

the following parameters the structural isomersC₂H₅OH and CH₃OCH₃ would be expected to have the samevalues

Answer 2

Option (D) i.e. Gaseous densities at the same temperature and pressure would be same of $C_{2} H_{5} OH$ and $CH_{3} OCH_{3}$ .

• All the other three option i.e. Boiling point, Vapour pressure at the same temperature and Heat of vaporization would not be same because of the Hydrogen Bonding which exist in case of $C_{2} H_{5} OH$ and do not exist in case of $CH_{3} OCH_{3}$ .