Ideal+Kosky

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Ideal Gas Law


 * Ideal Gas Law** is the mathematical relationship among pressure, volume, temperature, and the number of moles of a gas. It is expressed as pressure times volume is equal to the number of moles times the constant (r) times the temperature, in kelvins.

All of the previously learned gas laws ( Charles', Boyle's, Gay-Lussac's, and the combined) can be added into one equation that includes them all, the Ideal gas law. The number of moles present in the equation will always effect at least one other variable.

PV = nRT (It is the equation of state for an ideal gas, because the state of a gas can be defined by its pressure, volume, temperature, and number of moles. In this equation R is constant.)

So, a sample problem would look like this.

You have a container with a pressure of 6atms and a volume of 17 ml. You have 4 moles and R constant is .0821. Whats the temperature?

Set it up like so: 6 atms x 17ml = 4mols x .0821 x ? (6atms x 17 ml) / (4mols x .0821) = **310 kelvins**