### Calculus on The Midterm

Posted:

**Mon Feb 03, 2020 10:41 am**Will the midterm have problems where we use derivatives and integrals? In what problems would these be used.

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=129&t=58178

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Posted: **Mon Feb 03, 2020 10:41 am**

Will the midterm have problems where we use derivatives and integrals? In what problems would these be used.

Posted: **Mon Feb 03, 2020 10:43 am**

Right now, the only instance where we would have to use calculus is calculating the work done by reversible expansion, which is given by w = -(integral) Pdv. However, in many cases this can simplify to w= -nRTln(V2/V1), which is a simplified version of the integral that we can use if are given the number of moles and temperature of the reaction.

Posted: **Mon Feb 03, 2020 11:07 am**

We aren't expected to go into this class with knowledge of calculus, so I don't think we will have to actually solve any integrals. Lavelle may, however, ask us to do a problem in a different way that will essentially give us the same answer an integral would – the area under a curve.

Hope this helped!

Hope this helped!

Posted: **Mon Feb 03, 2020 12:30 pm**

I believe the calculus would help understand problems but not needed!

Posted: **Mon Feb 03, 2020 7:22 pm**

I don't think its necessary, but I think he was trying to show how the equation is derived.

Posted: **Mon Feb 03, 2020 7:58 pm**

the only calculus so far is w=integral(PdV)

Posted: **Mon Feb 03, 2020 8:26 pm**

I do believe calc is a pre/co req but I don't think we will need to do a lot of it. Especially on the midterm where other content will be covered like acids and bases and equilibrium

Posted: **Tue Feb 04, 2020 2:32 pm**

Brian Tangsombatvisit 1C wrote:Right now, the only instance where we would have to use calculus is calculating the work done by reversible expansion, which is given by w = -(integral) Pdv. However, in many cases this can simplify to w= -nRTln(V2/V1), which is a simplified version of the integral that we can use if are given the number of moles and temperature of the reaction.

thank you

Posted: **Tue Feb 04, 2020 2:39 pm**

We aren't required to have previous knowledge of calculus so I don't think it will be on the exam.