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

Ideal gas law: PV = nRT

P = pressure in atm = ?

V = volume in L = 18.0 L

n = moles = 2.00 mols

R = gas constant = 0.0821 Latm/Kmol

T = temperature in K = 13ºC + 273 = 286K

Plug the values into the ideal gas law equation and solve for P:

P = nRT / V (plug in the above values and find P in atmospheres).