## Change of Temp. converting from C to K in Entropy Change Problem

Volume: $\Delta S = nR\ln \frac{V_{2}}{V_{1}}$
Temperature: $\Delta S = nC\ln \frac{T_{2}}{T_{1}}$

Henry Krasner 1C
Posts: 64
Joined: Fri Sep 28, 2018 12:15 am

### Change of Temp. converting from C to K in Entropy Change Problem

Why in an entropy change problem when converting to Kelvin does the book give two different values. It should be 37.6 C to 310.6 K and 157.9 C to 430.9 K. However the solutions manual states that its 310.8 K and 431 K respectively. Is this just a mistake on the book's part or is there a reason we change the temperature?
This is 4F.7 in the textbook for those who want reference.
Last edited by Henry Krasner 1C on Mon Feb 04, 2019 4:07 pm, edited 1 time in total.

Chem_Mod
Posts: 18400
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 435 times

### Re: 4F.7 (7th Ed) Change in Temperature

Please delineate the problem itself so Chem Community users don't have to reference the book.

Chloe Thorpe 1J
Posts: 77
Joined: Fri Sep 28, 2018 12:16 am

### Re: Change of Temp. converting from C to K in Entropy Change Problem

The conversion from Celsius to Kelvin is [K] = [C] + 273.15. So, 37.6ºC would be 310.75 or approx. 310.8ºK. Likewise, 157.9ºC is 431.05 or approx. 431.1ºK.