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36 g of a liquid ( molar mass =72 ) are ...

36 g of a liquid ( molar mass `=72` ) are dissolved in 72 g of `H_(2)O` to form an ideal solution. If the vapour pressure of pure water at a given temperature is 18 mm Hg, which one is the vapour pressure of water in the solution ?

A

16 mm Hg

B

18 mm Hg

C

36 mm Hg

D

98 mm Hg

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The correct Answer is:
A
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