The+Ideal+Gas+Law.Bertino

The Ideal Gas Law
Last but not least is the ideal gas law. This law shows the mathematical relationship among the pressure, volume, temperature, and the number of moles of a gas. This ideal gas law reduces to Boyle's, Charles's, Gay-Lussac's law or Avogadro's law when the appropriate variables are held constant.

The Ideal Gas Law Equation: PV= nRT
 * P= pressure
 * V= volume
 * n= number of moles
 * T= temperature
 * R= the constant: it is known as the ideal gas constant and depends on the units given for pressure, temperature, and volume

If P= 1 atm, V=22.414L, n=1 mol, and T=273K, solve for R.
 * Example Problem**:

1) Write down appropriate equation: PV = nRT

2) Plug in the givens: (1atm)(22.414L) = (1mol)R(273.15K)

3) Use simple algebra: (1atm)(22.414L)/(1mol)(273.15K) = R

4) Simplify and check units: R = 0.082Latm/mol K

This image shows the relationships between pressure, volume, and mols. It however does not show how temperature affected the situation.

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