Determine the volume.

Question

Determine the volume in L of 86.65 g of NO₂ gas at 38 ^oC and 750 mm Hg.

Answer 1

PV = nRT

P = pressure = 750 mm Hg x 1 atm / 760 mm Hg = 0.987 atm

V = volume in L = ?

n = moles of NO2 = 86.65 g x 1 mol / 46 g = 1.88 moles

R = gas constant = 0.0821 Latm/Kmol

T = temperature in K = 38C + 273 = 311K

Solving for V we have ..

V = nRT/P = (1.88)(0.0821)(311) / 0.987

V = 48.6 L