Rectified spirit obtained by fermentation con | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) Rectified spirit is an azeotropic mixture of $95.5 \%$ ethanol and $4.5 \%$ water. Since this mixture boils at a constant temperature,it cannot be

Vedclass · Accepted Answer

It forms low-boiling azeotropic mixtures which distill over,leaving behind pure alcohol which can then be distilled.

Vedclass · Answer

(D) Rectified spirit is an azeotropic mixture of $95.5 \%$ ethanol and $4.5 \%$ water. Since this mixture boils at a constant temperature,it cannot be separated by simple fractional distillation. Benzene is added to form a ternary azeotrope with water and ethanol,which has a lower boiling point $(64.9 \ ^{\circ}C)$ than the binary azeotrope of ethanol-water $(78.1 \ ^{\circ}C)$. This ternary azeotrope distills off first,leaving behind pure (absolute) alcohol.

Rectified spirit obtained by fermentation contains $4.5 \%$ of water. To remove this water,rectified spirit is mixed with a suitable quantity of benzene and heated. Benzene helps because:

Similar Questions

Which one of the following mixtures can be separated into pure components by fractional distillation?

The process of manufacture of absolute alcohol from rectified spirit is:

The mixture that forms a maximum boiling azeotrope is

Rectified spirit is a mixture of

An azeotropic solution boils at a temperature lower than the boiling point of any of its components. This solution shows:

Vedclass Test Series

Exam Paper Generator

Online Exam Module