PV = nRT Calculations

Question 1

Ideal Gas equation is…?

Answer 1

PV = nRT

Question 2

What do these letters in the equation represent?

Answer 2

P = Pressure

V = Volume

n = Moles

R = Gas Constant

T = Temperature

Question 3

What are the units for these values?

Answer 3

Pressure = Pascals

Volume = m^3

Moles = gmol^-1

Gas Constant = 8.314 Jmol^-1 K^-1

Temperature = Kelvins

Question 4

PV = nRT Calculation Example

Answer 4

At what temperature will 0.654 moles of neon gas occupy 12.30dm^3 at 197 kPa?

197 kPa -> 197000 Pa

12.30dm^3 -> 0.01230 m^3

PV = nRT -> PV / nR = T

(197000 x 0.0123) / (0.654 x 8.314) = 446

446 K