A solution contains KCl in water. It is heated and the vapour formed is removed continuously. The vapour pressure of the solution will be:

Greater than before

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Same as before

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Lower than before

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None of the others

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Solution

The correct option is C Lower than before
The vapour pressure of the solution will be lower than before. $K^{+}$ and $C l^{-}$ dissociate and are non-volatile solutes that mix along with water molecules. This is an example of lowering of vapour pressure because of the addition of a non-volatile solute.

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