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Liquids in Liquids

For a sucrose...

Question

For a sucrose solution, elevation in boiling point is ${1.0}^{\circ} C$ , then what will be the boiling point of NaCl solution for same molal concentration?

A

{1.0}^{\circ} C

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B

{2.0}^{\circ} C

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C

{3.0}^{\circ} C

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D

{4.0}^{\circ} C

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Solution

The correct option is B ${2.0}^{\circ} C$
$Δ T b = i K b m$
For NaCl solution, i = 2
$∴ f o r N a C l, Δ T b = 2$

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