Achieve Question 5

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kyra sunil 3L
Posts: 35
Joined: Mon Jan 09, 2023 10:17 am

Achieve Question 5

Postby kyra sunil 3L » Mon Feb 20, 2023 11:31 am

Can someone help me with this question?

The molar heat capacity for carbon monoxide at constant volume is CV, m=20.17 J/(K·mol) .

A 15.00 -L fixed-volume flask contains CO(g) at a pressure of 2.00 kPa and a temperature of 25.0 °C.

Assuming that carbon monoxide acts as an ideal gas and that its heat capacity is constant over the given temperature range, calculate the change in entropy for the gas when it is heated to 800.0 °C.

Dylan Do
Posts: 36
Joined: Mon Jan 09, 2023 9:46 am

Re: Achieve Question 5

Postby Dylan Do » Mon Feb 20, 2023 11:37 am

First use the ideal gas law
to find the number of moles(n). Then use

905775469
Posts: 42
Joined: Mon Jan 09, 2023 2:46 am

Re: Achieve Question 5

Postby 905775469 » Mon Feb 20, 2023 10:55 pm

So you need to solve for moles by using PV=nRT but you need to turn kPa-->pa-->atm. Then use moles in the formula deltaS=n*Cv*ln(T2/T1) and substitute C with the value given in the question as well as the two different the temperatures. Then you get delta S.


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