[hpreston24]

Hello, I'm having trouble with my chemistry homework. If someone could please help or lead me in the right direction that would be great! Thank you! Here is the first question I need help with:


  Starting with a gas of N2 in a rigid container with pressure 734.3mmHg and temperature 646.0°C, what is its final temperature, in °C, if you compress it to 966.7mmHg?

[chenbeier]

Do you know the gas laws. Especially the one of Amontons.

[hpreston24]

Yes I do.

[chenbeier]

Then you should solve the exercise.

[hpreston24]

how?

[billnotgatez]

@hpreston24
What do you know about the relationship between volume, pressure and temperature and gas laws that might be applicable to this problem.

[poshbyro]

Use the ideal gas law: pv=nRT. I can't stress enough on how important it was for me to understand the relationship between all of the variables. Since pressure and volume are on the same side of the equation, you know that they are inversely related to one another. As the volume decreases of a system the pressure would then increase.

[Enthalpy]

Not enough information to answer this problem.

Can heat exit the container?

[billnotgatez]

Not enough information to answer this problem.

Can heat exit the container?

@Enthalpy
I am not discouraging your posting, but this is probably a question meant for simple ideal gas law understanding and they left out the finer points or caveats. This question can be answered by assuming a simple ideal gas law equation.
I am not sure the OP will be back so this may be moot.

[Enthalpy]

Not enough information to answer this problem. Can heat exit the container?

[...] This question can be answered by assuming a simple ideal gas law equation. [...]

So "compress" would mean "heat the gas, the pressure increases as a consequence"? Bizarre wording. "Rigid container" does go in this direction.

[billnotgatez]

Bizarre wording.

I agree

I am thinking that they wanted the student to understand that if you have a fixed volume and a fixed amount of gas and the pressure changes then the temperature changes (or more logically if the temperature changes then the pressure changes). How in real life you can compress a gas in a fixed chamber and you do not add more gas is beyond me as well. But, you can do the math and get an answer. 

I bet we confused the OP (or at least I did).