Initially, a gas in a closed container has a temperature of 30°C and a pressure of 760 mm Hg. We’re being asked to determine the pressure of the gas sample if the temperature changes to 1155°C.
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:
Since the container is closed, the volume of the gas remains constant and the combined gas law becomes:
Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose that a can contains a residual amount of gas at a pressure of 760 mmHg and a temperature of 30 oC.
What would the pressure be if the can were heated to 1155 oC?