For which of the following parameters the structural isomers C2H5OH and CH3OCH3 would be expected to have the same values? (Assume ideal behaviour)

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) Heat of vaporization (B) Vapour pressure at the same temperature (C) Boiling points (D) Gaseous densities at the same temperature and pressure

Tardigrade Admin · Accepted Answer

In CH3CH2OH, there is intermolecular H-bonding while it is absent in isomeric ether CH3OCH3 Larger heat is required to vaporise CH3CH2OH as compared to CH3OCH3, thus is incorrect. CH3CH2OH is less volatile than CH3OCH3, thus vapour pressures are different, thus is incorrect. bp of CH3CH2OH>CH3OCH3, thus is incorrect. Density=(mass/volume), due to ideal behaviour at a given temperature and pressure volume and molar mass are same. Hence, they have same vapour density.

Q. For which of the following parameters the structural isomers C2​H5​OH and CH3​OCH3​ would be expected to have the same values? (Assume ideal behaviour)

Heat of vaporization

Vapour pressure at the same temperature

Boiling points

Gaseous densities at the same temperature and pressure

Q. For which of the following parameters the structural isomers $C_{2} H_{5} O H$ and $C H_{3} OC H_{3}$ would be expected to have the same values? (Assume ideal behaviour)