Boltzmann Equation for Entropy:

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Marsenne Cabral 1A
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Joined: Fri Sep 28, 2018 12:19 am


Postby Marsenne Cabral 1A » Sun Feb 17, 2019 12:20 am

Can somene help me understand what we use the ln(K2/K1)=-(deltaH/R)[1/T2-1/T1] equation?

David S
Posts: 54
Joined: Fri Sep 28, 2018 12:15 am

Re: Derivations

Postby David S » Sun Feb 17, 2019 8:46 am

We use this equation to calculate the equilibrium constant K for a reaction at a different, new temperature (K is dependent on temperature).

Specifically, K1 is your currently known equilibrium constant at initial Temperature (T1). Then, given that you know the reaction enthalpy, you use this equation to solve for the new equilibrium constant (K2) at a new target temperature (T2).

Posts: 62
Joined: Fri Sep 28, 2018 12:29 am

Re: Derivations

Postby 904936893 » Sun Feb 17, 2019 11:48 am

The equation is called the Van't Hoff Equation, and it helps show temperature dependence of K! It can be used to find K at different temperatures.

Jonny Schindler 1A
Posts: 30
Joined: Fri Sep 28, 2018 12:20 am

Re: Derivations

Postby Jonny Schindler 1A » Tue Feb 26, 2019 4:44 pm

Conceptually, how does a change in temperature effect the equilibrium concentrations?

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