Brock+Gay+Lussac

Gay-Lussac's law states that the pressure of a fixed mass of a gas at constant volume varies directly with the kelvin temperature.

The equation for this is: P1/T1 = P2/T2

An example problem is: a gas in a container is at a pressure of 4 atm at 50° celcius. directions on the container warn the user not to keep it in a place where the temperature exceeds 96° celcius. What would the gas pressure in the container be at 96° celcius ?

So, to find the temperature in kelvins, we have to add 273 to both temperatures: 50° celcius + 273 = 323 K 96° celcius + 273 = 421 K

fill in your variables: P1 = 4 atm T1 = 323 K P2 = ? T2 = 421 K

so, we must isolate P2, so we have to multiple both sides by T2

Then you have to plug in the numbers: __4 atm x421 K__ = P2 = 5.214 atm 323 K

Home Page