JEE MAIN - Chemistry (2025 - 8th April Evening Shift - No. 11)
Which of the following binary mixture does not show the behaviour of minimum boiling azeotropes?
$\text{CH}_3\text{OH} + \text{CHCl}_3$
$\text{C}_6\text{H}_5\text{OH} + \text{C}_6\text{H}_5\text{NH}_2$
$\text{H}_2\text{O} + \text{CH}_3\text{COC}_2\text{H}_5$
$\text{CS}_2 + \text{CH}_3\text{COCH}_3$
Explanation
A binary mixture of $ \text{C}_6\text{H}_5\text{OH} $ and $ \text{C}_6\text{H}_5\text{NH}_2 $ exhibits negative deviation from Raoult's law. This means that the vapor pressure of the solution is lower than the vapor pressures of the pure components, $ \text{C}_6\text{H}_5\text{OH} $ and $ \text{C}_6\text{H}_5\text{NH}_2 $. Consequently, the boiling point of the solution is higher than the boiling points of the pure substances. Therefore, this mixture forms a maximum boiling azeotrope.
Comments (0)
