# Pressure of an Ideal Gas

Written by Jerry Ratzlaff on . Posted in Classical Mechanics

## Pressure of an Ideal Gas

In an ideal gas, molecules have no volume and do not interact.

### Pressure of an Ideal Gas Formula

$$p = \frac {n R T_a}{V}$$          $$pressure \;=\; \frac {amount \; of \; substance \;\;x\;\; specific \; gas \; constant \;\;x\;\; absolute \; temperature }{ volume }$$

Where:

$$p$$ = pressure

$$n$$ = amount of substance

$$R$$ = specific gas constant (ideal gas constant)

$$T_a$$ = absolute temperature

$$V$$ = volume