Q. If for a sucrose solution elevation in boiling point is $0.1℃$ then what will be boiling point of $NaCl$ solution for the same molal concentration?
A) 0.1
B) 0.2
C) 0.16
D) 0.26
Explanation
(b)
Elevation in boiling point is a colligative property as it depends upon the number of particles
$\mathrm{\Delta}T_{b} \propto n$
For sucrose $n = 1\ \mathrm{\Delta}T_{b} = 0.1℃$
For $NaCl,\ n = 2,\ \mathrm{\Delta}T_{b} = 0.2℃$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.