Problem: If you have 2.00 L of a gas initially at 1.00 atm and 27 °C, what temperature will it have at 3.00 L and 1.25 atm?

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Initially, a gas sample has a volume of 2.00 L at 27 ˚C and 1.00 atm. We’re being asked to determine the temperature of the gas if the pressure changes to 1.25 atm and the volume changes to 3.00 L.


Recall that the ideal gas law is:



The pressure, volume, and temperature of a gas are related to the number of moles of gas and the universal gas constant:



The value nR is constant. For a given moles of gas, the initial and final pressure, volume, and temperature of the gas are related by the combined gas law:



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Problem Details

If you have 2.00 L of a gas initially at 1.00 atm and 27 °C, what temperature will it have at 3.00 L and 1.25 atm?

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Our tutors have indicated that to solve this problem you will need to apply the Chemistry Gas Laws: Combined Gas Law concept. You can view video lessons to learn Chemistry Gas Laws: Combined Gas Law. Or if you need more Chemistry Gas Laws: Combined Gas Law practice, you can also practice Chemistry Gas Laws: Combined Gas Law practice problems.

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