Chemistry 122 d

Question

A quantity of 2.00 moles of gas is trapped in a 18.0 L container at 13•C. Calculate the pressure of the gas in this container.

Answer 1

This requires using the ideal gas law (pv=nRT). If you rearrange the equation to solve for pressure, you get

p=nRT/v

From here you can just plug in your values and solve for pressure in atm, but remember that T is in Kelvin so you have to add 273 to 13 for the temperature (286 K)

p = 2.0 X 0.0834 X 286 / 18

p = 2.58 atm