Question

A mixture of two immiscible liquids at a constant pressure of 1.0 atm boils at temperature

• A. Equal to the normal boiling point of more volatile liquid.
• B. Equal to the mean of the normal boiling points of two liquids.
• C. Greater than normal boiling point of either of liquids.
• D. Smaller than the normal boiling point of either of liquids.

Answer 1

The correct option is D Smaller than the normal boiling point of either of liquids.

As we know, a solute (non volatile) lowers the vapour pressure of a liquid ,and hence a higher boiling point the solution.
so here, mixture will boil at lower temperature of the boiling point of either liquid.