# What is the Combined Gas Law and How Does it Work?

What is the Combined Gas Law and How Does it Work? By combining Boyle’s Law, Charle’s Law, Gay Lussac’s Law, combined gas law for a fixed amount of a gas is PV/T=K means

P1V1/T1 = P2V2/T2
The Combined Gas Law is a key equation used in the study of gas behavior and its relation to pressure, temperature, volume and the amount of gas present. By understanding this law, you can better understand how changes in these factors affect the behavior of gases.

What is the Combined Gas Law?
The Combined Gas Law, which is also known as the General Gas Law, is an equation that considers the relationship between pressure, temperature, volume and amount of gas present. This law states that when two or more of these variables change in a gaseous system, then the other corresponding variables must also change in order to maintain equilibrium. It’s important to note that this law applies specifically to gases and not any other state of matter.

How Does the Combined Gas Law Work?
The Combined Gas Law takes into account the relationships between pressure, temperature, volume, and amount of gas present. It states that when two or more of these variables change in a gaseous system, then the other corresponding variables must also change in order to maintain equilibrium. This law works because the particles of a gas (e.g., molecules and atoms) are spaced far apart from each other and move freely about. These particles react to changes in pressure, temperature and volume—which is why we see the equation’s three implicit equations needing to be changed if two out of three values are changed.

The Formulas Behind the Combined Gas Law.
In order to accurately derive the formula for the Combined Gas Law, several different physical laws are being used. Chemical equations such as Boyle’s Law, Charles’ Law and Avogadro’s Law all provide important pieces of information in deriving the Combined Gas Law. These equations state that when pressure and volume increase, temperature decreases; when pressure increases and temperature remains constant, then volume also increases; and Avogadro’s law states that for a given mass of an ideal gas at a fixed temperature and pressure, the volume is directly proportional to the number of moles of gas present. Once combined, these three equations help form the full equation for the Combined Gas Law.

Temperature-Specific Calculations with the Combined Gas Law.
Temperature plays a key role in the Combined Gas Law, making it possible to calculate how much the temperature is altered if any of the other variables change. For example, if the pressure and volume of a gas are increased, then according to the law, the temperature must also increase. This can be useful in real-world applications to make predictions and calculations related to various temperatures changes. Furthermore, understanding this law can help scientists more clearly understand thermal expansion and temperature effects on gases.

Practical Applications of the Combined Gas Law.
The well-known practical applications of the Combined Gas Law include car engines and diving with compressed air tanks. As car engines increase speed, the temperature production will also increase in accordance with the law. Divers can also use this law to limit their depth if using compressed air tanks for breathing. This is because as the diver goes deeper, pressure increases and therefore compensated by decreasing air temperature in order to observe the gas law stability.