Combined+Gas+Law

 = Combined Gas Law =

The combined gas law is the relationship between pressure volume and temperature of a fixed amount of gas.

V¹P¹/T¹ = V²P²/T²

V = Volume P = Pressure T = Temperature

Example: The volume of an unknown gas is 27.5 mL at 22 C and .974atm. What will the volume be at 15C and .993atm? [(Convert C in K (C+273=)] V² = P¹V¹T²

P²T¹ (.974atm)(27.5mL)(288K)/(295K)(.9936atm) = 7714.08/295.993 = 26.33mL

=Combined Gas Law Diagram:=