## Derivations

Boltzmann Equation for Entropy: $S = k_{B} \ln W$

Marsenne Cabral 1A
Posts: 59
Joined: Fri Sep 28, 2018 12:19 am

### Derivations

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

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).

904936893
Posts: 62
Joined: Fri Sep 28, 2018 12:29 am

### Re: Derivations

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

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

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