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### Partial Pressures for Different Temperatures

Posted: **Tue Jan 08, 2019 10:11 pm**

by **Harmony Becerra**

For 5G.9 it asks whether the partial pressures will be the same in both containers when the second container has a higher molarity. I have the answer key and it says the partial pressures will be different, but I don't understand why. If each container is held at the same temperature, wouldn't the partial pressures stay the same? Or does it change because the molarity changes, and if so, why?

### Re: Partial Pressures for Different Temperatures

Posted: **Wed Jan 09, 2019 2:24 pm**

by **Venya Vaddi 1L**

In the second container, since the concentration of O_{2} is greater the partial pressure is greater. Pressure and concentration are directly proportional as shown by P=(conc.)RT, so if concentration is greater, then pressure is also greater (given that T is the same).

### Re: Partial Pressures for Different Temperatures

Posted: **Wed Jan 09, 2019 3:02 pm**

by **Anusha 1H**

Molarity and Partial Pressure are directly related.

We can tell from PV=nRT when the equation is written

- (n/V) = P/(RT) or

- concentration = P/(RT)

that when the pressure increases the concentration will also increase.