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On mixing , heptane and octane form an i...

On mixing , heptane and octane form an ideal solution . At 373 K , the vapour pressures of the two liquid components (heptanes and octane ) are 105 `kP_(a)` and `45kP_(a)` respectively . Vapour pressure of the solution obtained by mixture `25.0` g of heptane and 25 g of octane will be : (Molar mass of heptane `-100 g mol^(-1)` and of octane = `114 g mol^(-1)` )

A

`77.0 kP_(a)`

B

`38.5 kP_(a)`

C

`96.2 kP_(a)`

D

`154 kP_(a)`

Text Solution

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The correct Answer is:
A
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