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The maximum entropy of mixing occurs when hexane and heptane are mixed respectevely in the prporation A) 8.6g & 10g B) 8.6g & 8.6g C) 10g & 8.6g D) 10g & 10g Please give the answer with details please

The maximum entropy of mixing occurs when hexane and heptane are mixed respectevely in the prporation
A) 8.6g & 10g
B) 8.6g & 8.6g
C) 10g & 8.6g
D) 10g & 10g
Please give the answer with details please

Grade:

1 Answers

SAGAR SINGH - IIT DELHI
879 Points
10 years ago

Dear student,

Recall that dU = 0 for the isothermal expansion of an ideal gas. Then,

               

So,

               

for an ideal gas. So, for gas number 1 in our fictitious isothermal expansion we have,

               

and for gas number 2,

               

The total entropy change is the sum of these two individual entropy changes,  

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