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The maximum entropy of mixing occurs whe...

The maximum entropy of mixing occurs when hexane and heptane are mixed respectively in the proportion:

A

`8.6 g` and `10.0 g`

B

`8.6 g` and `8.6 g`

C

`10.0 g` and `8.6 g`

D

`10.0 g` and `10.0 g`

Text Solution

Verified by Experts

The correct Answer is:
A
`DeltaS_(mix)-RSigma x i` ln,x I, where `x i=` mole fraction, `x i` is maximum when both the component are in equal amount.
`8.6 g` of hexane `=8.6/86=0.1` mole
`10.0 g` of heptane `=10.0/100=0.1` mole
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