1. If we increase the pressure of a sample of gas while holding the volume constant, the temperature of the gas will _________.

2. A container of gas has a pressure of 15 atm at 161 ° C. What temperature would the gas have to be heated to if we wanted to triple the pressure?

3. A gas cylinder contains 50.0 L of gas and has a pressure of 186 atm at -14 °C. What will be the pressure if the temperature is increased to 177 °C?

4. A sample of gas is in a cylinder of fixed volume. At 46 ° C its pressure is 578 mmHg. At what temperature (in ° C) will its pressure be 896 mmHg?

5. The pressure in a container of gas is 9.42 atm at 364 °C. If the sealed container is cooled to 96 °C, what will be the pressure?

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All of these can be solved using the Ideal Gas Law:

PV = nRT

In each case the number of moles of gas ('n') is constant, and R is a constant, so you're using:


\frac {PV}{T} = Constant


Hence comparing values of pressure, volume and temp before and after:


\frac {P_1V_1}{T_1} = \frac {P_2V_2}{T_2}


With this formula you can solve every one of these homework problems.