A sample of an ideal gas in a closed container (3.00 L) at 25.0 degrees C is heated to 300 degrees C. What is the pressure of the gas at this temperature?
Do I use P1/T1=P2/T2? I was told to use that, but I don't know what pressure is.
Thanks
This problem deals with Pressure, Volume, and Temperature. Sounds like a PV/T=PV/T problem.
The reason you don't know pressure is - That's what you're solving for! The thing you're solving for must always be included in the equation that you use to solve for it.
By the way, PV/T = PV/T is just another way of expressing PV=nRT.
PV/T = PV/T just equates an initial state to a final state, showing that the overall proportions will remain the same even after some variables have changed. The amount of gas (n) is assumed to be constant, which is why it doesn't appear in the equation.
But I need P1. What do I do to get p1?
Yes, you can use the ideal gas law equation P1/T1 = P2/T2 to solve this problem. The ideal gas law relates the pressure (P), volume (V), temperature (T), and the number of moles (n) of a gas.
In the given scenario, we are looking for the pressure of the gas at a different temperature. The equation P1/T1 = P2/T2 allows us to relate the initial pressure (P1) and temperature (T1) to the final pressure (P2) and temperature (T2).
To solve for the pressure (P2) at the final temperature, you need the following information:
1. Initial pressure (P1): This information is not provided in the question. If it is not given, you cannot directly determine the pressure and would require additional information.
2. Initial temperature (T1): This is given as 25.0 degrees C.
3. Final temperature (T2): This is given as 300 degrees C.
Since P1 is not given, you would not be able to directly calculate the pressure. However, if you are given additional information, such as the initial pressure or the number of moles of gas, you can proceed with the calculation using the ideal gas law equation.