# 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"#?

##### 2 Answers

The final pressure will be

#### Explanation:

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:

where

**Write what is known.**

**Write what is unknown:**

**Solution**

Rearrange the equation to isolate

#### Explanation:

With a constant container volume, Charles' Law becomes simply:

Rearrange for your known values:

The ideal gas law (Charles' Law) states:

Where