# What does the Constant R in the Ideal Gas Law mean?

##### 2 Answers

Regnault constant, or Universal Gas Constant.

#### Explanation:

Gas constant, *R*, is named after the French chemist **Henri Victor Regnault**. It is also called the **Universal Gas Constant**.

Gas constant is equivalent to Boltzmann constant

There are many values of R depending on the units used.

Here are some examples:

R can be viewed as a scaling factor for molar energy of ideal gas law. For ideal gas law, energy can be viewed as increasing linearly with temperature.

#### Explanation:

Through derivation. it was shown that for one-dimension,

The above is for 1 mole of ideal gas. For 1 molecule of gas, we know that

So 1 molecule of ideal gas moving in 3 dimension is

You can equate the kinetic energy of the molecule

Read more

http://homepage.smc.edu/gallogly_ethan/files/ideal%20gas%20law%20derivation.pdf