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The direct conversion of A to B is diffi...

The direct conversion of `A` to `B` is difficult, hence it is carried out as
`A rarr C rarrD rarr B`
Given, `DeltaS_((A^rarrC)) = 50 eU,DeltaS_((C^rarrD))=30eU,DeltaS_((BrarrD))=20 eU`, where `eU` is entropy unit. Thus the change in entropy in `(A rarrB)` is:

A

`- 100 eu`

B

`- 60 eu`

C

`+ 60 eu`

D

`+ 100 eu`

Text Solution

Verified by Experts

The correct Answer is:
C
According to the shown path, we have
`Delta S (A rarr B) = Delta S (A rarr C) + Delta S (C rarr D) + Delta S (D rarr B)`
Since `Delta S (D rarr B) = - Delta S (B rarr D)`, we have
`Delta S (A rarr B) = (50) + (30) + (-20)`
`60 eu`
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