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Calculate the mass of a non-volatile sol...

Calculate the mass of a non-volatile solute (molar mass 40 g `mol^(-1)`) which should be dissolved in 114g octane to reduce its vapour pressure to 80%.

A

20 gm

B

10 gm

C

7.5 gm

D

5 gm

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The correct Answer is:
B
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VMC MODULES ENGLISH-LIQUID SOLUTION -EFFICIENT
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