The basic equation for the relationship between pressure, volume, and temperature is known as the ideal gas law:PV = nRTWhere:P = pressureV = volumen = number of moles of gasR = ideal gas constantT = temperature in KelvinThis equation shows that for a given amount of gas, the pressure and volume are inversely proportional to each other, while the temperature is directly proportional to both pressure and volume. Essentially, it states that as the pressure of a gas increases, its volume decreases, and vice versa. Similarly, as the temperature of a gas increases, its pressure and volume also increase.