What is the temperature change when the surrounding pressure is suddenly higher?

I think it rises if the pressure is not change so greatly, right?

To answer thermodynamical questions it is nessecary to know the properties of the system and the properties of the process you´re talking about.

In this case, I think this might help you:

- An isolated system with variable volume V in an external pressure will expand/compress until the internal pressure equals the external pressure.

- Reducing the volume V of a system with a pressure of p by dV increases it´s internal energy E by: dE = p*dV

- For an ideal gas (that most common gases can be treatened as) the relation between energy and temperature is: E = 1.5*N*k*T, where N is the number of particles and k is a constant (Boltzmann-constant). EDIT: I think for most "real" gases like O2 you simply have to adjust the 1.5.

 

Proposed process:

Increasing external pressure => Reducing volume of the system with positive internal pressure => increase in energy => increase in temperature.

 

Note:

- internal pressure does not nessecarily remain constant over the process.

- your question lacked a lot (almost all) of nessecary details to be answered correctly. Above is just what I thought that might help you.

 

EDIT2: Oh, I just saw I allready met one of your posts before. Well, this was slightly better but not really good. Try to stick to the [Title: question in short form; 1st paragraph: Introduction what you´re trying to do/find out; Next paragraph(s): What you allready know or think to know about the problem, Last paragraph: Your question] scheme. I know it´s not so easy to formulate questions/answers/texts in a way they´re easily understandable for others. Had to learn it the hard way myself . And I´m still on it which is one of the main reasons I post in forums such as this.

the tempreature will fall if you increase the tempreature remember the function of a compressor in the refrigerator and in air conditioner.