Q. If the elevation in boiling point of a solution of 10 g of solute (mol. wt. = 100 g of water is $\mathrm{\Delta}T_{b},\$the ebullioscopic constant of water is
A) 10
B) $100\mathrm{\Delta}T_{b}$
C) $\mathrm{\Delta}T_{b}$
D) $\frac{\mathrm{\Delta}T_{b}}{10}$
Explanation
(c)
m$= \frac{1000 \times k_{b} \times w}{W \times \mathrm{\Delta}T_{b}}$
$\mathrm{\Delta}T_{b}$=$\frac{1000 \times k_{b} \times w}{W \times m}$
$\mathrm{\Delta}T_{b} = \frac{1000 \times k_{b} \times 10}{100 \times 100}$
$\mathrm{\Delta}T_{b} = k_{b}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.