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Calculate the entropy change when 1mole ...

Calculate the entropy change when 1mole of an ideal gas expands reversibly form an initial volume of `2 L` to a final voluume of `20L` at `25^(@)C`.

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From the given data in the problem, we can write.
`DeltaS_(T) = nR "In"(V_(2))/(V_(1))`
`= 2.303 nR log_(10) V_(2)//V_(1)`
`=2.303 xx1 xx 8.314 xx log_(10) 20//2`
` = 2.303 xx 8.314 xx1xx 19.5 J mol^(-1)K^(-1)`
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