Temperature in Homework Problems

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Brandon Jarrold4H
Posts: 28
Joined: Fri Sep 26, 2014 2:02 pm

Temperature in Homework Problems

Postby Brandon Jarrold4H » Sat Nov 29, 2014 10:52 pm

Hi, I notice for the homework problems, dealing with chemical equilbrium, that a temperature is given. However, you don't use temperature when working through the problems, so I was wondering if there is any significance to this or if we should just skip over it. Thanks.

Eduardo Torres 3G
Posts: 13
Joined: Fri Sep 26, 2014 2:02 pm

Re: Temperature in Homework Problems

Postby Eduardo Torres 3G » Sat Nov 29, 2014 11:00 pm

Usually the temperature is a piece of information that you can just skip over, but this is not true if you have to use the equation PV=nRT. This would be the case if, for example, the moles of a gas are given and the volume of the container. Then, you would need the temperature to find the partial pressure of the gas to solve for Kp.

Breanna Khorrami 4F
Posts: 10
Joined: Fri Sep 26, 2014 2:02 pm

Re: Temperature in Homework Problems

Postby Breanna Khorrami 4F » Mon Dec 01, 2014 4:41 pm

It's also important just to show that K differs at different temperatures. For some of the questions, a chart earlier on in the chapter is also referenced where you are required to find K for a given temperature on the chart. Both of these just go to show that K DOES change with temperature. It is pretty useless to the problems in terms of solving them, UNLESS you are using the equation stated above.

Hope this helps!


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