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Emission and Absorption Spectra

Which of the ...

Question

Which of the following will have highest boiling point at $1 a t m$ pressure?

0.1 M

N a C l

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0.1 M S u c r o s e

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0.1 M

{B a C l}_{2}

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1.0 M G l u c o s e

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Solution

The correct option is C $0.1 M$ ${B a C l}_{2}$
Using boiling point elevation formula,
$Δ T_{b} = i \times K_{b} \times molality$
Where $i$ is Van't Hoff factor.
Highest Van't Hoff factor is for $B a C l_{2}$ which is 3.

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