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Effect of Change of Pressure on State Change of Matter

The boiling p...

Question

The boiling point of 0.2 mol $k g^{- 1}$ solution of X in water is greater than equimolal solution of Y in water. Which one of the following statements is true in this case?

Molecular mass of X is less than the molecular mass of Y.

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Y is undergoing dissociation in water while X undergoes no change.

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X is undergoing dissociation in water.

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Molecular mass of X is greater than the molecular mass of Y.

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Solution

The correct option is C
X is undergoing dissociation in water.

$Δ T_{b} = i K_{b} m$
For equimolal solution, elevation in boiling point will be higher if solution undergoes dissociation i.e., $i > 1$ .

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The boiling point of 0.2 mol kg−1solution of X in water is greater than equimolal solution of Y in water. Which one of the following statements is true in this case?

The correct option is C X is undergoing dissociation in water. ΔTb=iKbm For equimolal solution, elevation in boiling point will be higher if solution undergoes dissociation i.e., i>1.

The boiling point of 0.2 mol $k g^{- 1}$ solution of X in water is greater than equimolal solution of Y in water. Which one of the following statements is true in this case?

The correct option is C
X is undergoing dissociation in water.

$Δ T_{b} = i K_{b} m$
For equimolal solution, elevation in boiling point will be higher if solution undergoes dissociation i.e., $i > 1$ .