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### Important Thermochemistry Equations

Posted: **Mon Feb 04, 2019 5:21 pm**

by **Sophie Roberts 1E**

Does someone mind listing all the important equations we need to know for the thermochemistry unit? I get confused when reading the book, which equations are necessary to know and which are just examples...

Thank you!!

### Re: Important Thermochemistry Equations

Posted: **Mon Feb 04, 2019 7:47 pm**

by **Kathryn Wilhem 1I**

Going off of the equation sheet on the website, we should know:

Ideal gas, Cp = (5/2) R

Ideal gas, Cv = (3/2) R

Ideal gas, U = 3/2 nRT

∆U = q + w

q = n C ∆T

W = - P x ∆V

PV = nRT

w= -nRTln(V2/V1)

Those are all of the Thermochemistry equations that I could find on the sheet.

### Re: Important Thermochemistry Equations

Posted: **Tue Feb 05, 2019 12:40 pm**

by **Rimsha Hussaini 1A**

All of these equations will be given on a test, midterm, or final on the equation sheet, but it is also good to know how to derive some of these equations by knowing one or two of them.

### Re: Important Thermochemistry Equations

Posted: **Tue Feb 05, 2019 9:30 pm**

by **Ian Marquez 2K**

Also, it is helpful to know which equations apply for which problems so that your time is used efficiently to understand and set up the problems. Make sure you know the general equations needed to solve different problems (specific heat capacity, internal energy, constant volume/pressure, etc.).