Question

Out of 1M glucose and 2M glucose which one has a higher boiling point and why

Answer 1

2M glucose since on increasing the no. of moles the molality  also increases which is directly proportional to elevation in boiling point.

Answer 2

Answer : 2 M glucose has a higher boiling point.

Explanation :

Formula used for Elevation in boiling point :

$\Delta T_b=i\times k_b\times m$

where,

$\DeltaT_b$ = change in boiling point

$k_b$ = boiling point constant

m = molality

i = Van't Hoff factor

As per question, we conclude that the Van't Hoff factor of the given solution are same because of the same solute (glucose). So, the boiling point depends only on the molality.

The elevation in boiling point is directly proportional to the molality of the solution.

That means higher the molality, higher will be the boiling point and vice-versa.

Hence, 2 M glucose has a higher boiling point.