A sample of gas at #"31"^@"C"# has a pressure of #"745 Torr"#. What is the pressure if the temperature is increased to #"78"^@"C"#?
The final pressure will be
This is an example of Gay-Lussac's law , which states that the pressure of a gas with a constant volume and amount, is directly proportional to the temperature in Kelvins. This means that if the pressure is increased, the temperature will increase, and vice-versa.
The equation that is used for this law is:
Write what is known.
Write what is unknown:
Rearrange the equation to isolate
With a constant container volume, Charles' Law becomes simply:
Rearrange for your known values:
The ideal gas law (Charles' Law) states: