Van’t Hoff Equation


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805383532
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Joined: Thu Jul 11, 2019 12:16 am

Van’t Hoff Equation

Postby 805383532 » Sun Feb 23, 2020 11:24 pm

What does the equation measure? How does it relate to gibbs free energy?

Aliya Jain 2B
Posts: 101
Joined: Wed Sep 11, 2019 12:16 am

Re: Van’t Hoff Equation

Postby Aliya Jain 2B » Sun Feb 23, 2020 11:29 pm

The Van't Hoff Equation can be used to calculate the k at a different temperature if change in enthalpy is known and is constant.

kristi le 2F
Posts: 102
Joined: Thu Jul 11, 2019 12:15 am

Re: Van’t Hoff Equation

Postby kristi le 2F » Sun Feb 23, 2020 11:40 pm

The vant hoff equation can be used to calculate K at different temperatures if stand enthalpy of real lion is known.

805097738
Posts: 180
Joined: Wed Sep 18, 2019 12:20 am

Re: Van’t Hoff Equation

Postby 805097738 » Tue Feb 25, 2020 5:40 pm

kristi le 2F wrote:The vant hoff equation can be used to calculate K at different temperatures if stand enthalpy of real lion is known.


what is real lion

Maya Pakulski 1D
Posts: 105
Joined: Thu Jul 11, 2019 12:17 am

Re: Van’t Hoff Equation

Postby Maya Pakulski 1D » Wed Feb 26, 2020 3:05 pm

805097738 wrote:
kristi le 2F wrote:The vant hoff equation can be used to calculate K at different temperatures if stand enthalpy of real lion is known.


what is real lion


probably "real ion" if I had to guess

Veronica_Lubera_2A
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Re: Van’t Hoff Equation

Postby Veronica_Lubera_2A » Wed Feb 26, 2020 3:44 pm

Van't Hoff's equation is:

ln(K2/K1)= (-DeltaH/R)(1/T2 - 1/T1)

So the equation relates enthalpy too but this value should be given in the problem.

Mai V 4L
Posts: 111
Joined: Fri Sep 28, 2018 12:23 am

Re: Van’t Hoff Equation

Postby Mai V 4L » Mon Mar 09, 2020 3:41 pm

Will this be on the final exam formula sheet?

AKatukota
Posts: 100
Joined: Thu Jul 25, 2019 12:18 am

Re: Van’t Hoff Equation

Postby AKatukota » Mon Mar 09, 2020 3:49 pm

Should we also know to derive it?

JohannaPerezH2F
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Re: Van’t Hoff Equation

Postby JohannaPerezH2F » Mon Mar 09, 2020 8:30 pm

it is used to calculate k at different temperatures

Julia Holsinger_1A
Posts: 50
Joined: Tue Feb 26, 2019 12:16 am

Re: Van’t Hoff Equation

Postby Julia Holsinger_1A » Tue Mar 10, 2020 6:01 pm

How do you know to use Van't Hoff Equation? Are there certain questions in problems that signal to use it?

Callum Guo 1H
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Re: Van’t Hoff Equation

Postby Callum Guo 1H » Tue Mar 10, 2020 6:10 pm

ln(K2/K1)= (-DeltaH/R)(1/T2 - 1/T1)


you can use it to calculate K value at a temperature given the K value at another temperature

Jacob Motawakel
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Re: Van’t Hoff Equation

Postby Jacob Motawakel » Tue Mar 10, 2020 6:34 pm

You can calculate K at different temperatures with the Van't Hoff equation. I don't see how it relates to DeltaG though because the only relation between DeltaG and K is with standard DeltaG, and since Van't Hoff equation doesn't calculate K at standard conditions, you can't use that K in the equation: standard DeltaG = -RTlnK


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