If for a sucrose solution, elevation in boiling point is 0.1° C, then what will be the boiling point of NaCl solution for same molal concentration?

Question

If for a sucrose solution, elevation in boiling point is 0.1° C, then what will be the boiling point of NaCl solution for same molal concentration? (A)  0.1° C  (B)  0.2° C  (C)  0.08° C  (D)  0.01 ° C

Tardigrade Admin · Accepted Answer

Elevation in boiling point is a colligative property as it depends upon the number of particles. Δ Tb propto n For sucrose, n=1, Δ Tb=0.1° C For NaCl, n=2, Δ Tb=0.2° C

Q. If for a sucrose solution, elevation in boiling point is $0. 1^{\circ} C,$ then what will be the boiling point of $N a Cl$ solution for same molal concentration?

$0. 1^{\circ} C$

$0. 2^{\circ} C$

$0.0 8^{\circ} C$

$0.0 1^{\circ} C$

Elevation in boiling point is a colligative property as it depends upon the number of particles.
$Δ T_{b} \propto n$
For sucrose, $n = 1, Δ T_{b} = 0. 1^{\circ} C$
For $N a Cl, n = 2, Δ T_{b} = 0. 2^{\circ} C$

Q. If for a sucrose solution, elevation in boiling point is 0.1∘C, then what will be the boiling point of NaCl solution for same molal concentration?

0.1∘C

0.2∘C

0.08∘C

0.01∘C