## Assumptions

$\ln K = -\frac{\Delta H^{\circ}}{RT} + \frac{\Delta S^{\circ}}{R}$

kevinolvera1j
Posts: 103
Joined: Fri Aug 02, 2019 12:15 am

### Assumptions

When can we assume that delta entropy would be the same for different temperatures. Do the temperatures have to be close together?

Charisse Vu 1H
Posts: 101
Joined: Thu Jul 25, 2019 12:17 am

### Re: Assumptions

We always assume that delta S is the same at different temperatures because we can assume that the difference in delta S between the reactants and products is the same at two different temperatures.

JamieVu_2C
Posts: 108
Joined: Thu Jul 25, 2019 12:16 am

### Re: Assumptions

You have multiple equations for finding the change in entropy. One is $\Delta S=\frac{q}{T}$. You use this equation when the temperature is constant. The other equation is $\Delta S=nCln\frac{T_{2}}{T_{1}}$. This equation is used when you have a final temperature that is different from the initial temperature.

Fatemah Yacoub 1F
Posts: 114
Joined: Thu Jul 11, 2019 12:16 am

### Re: Assumptions

Temperature affects entropy because at higher temperature, there are more possible states for particles increasing entropy and vice versa for lower temperatures.