HARD PROBLEM

Question

You have a sample of SO2 that has a mass of 8.22 grams. This gas is at a pressure of 1200mmHg and at a temperature of 75.0oC. What is the volume of this gas in liters?

Answer 1

This problem is not so hard: 

 

use PV=nRT

 

P= pressure, - 1200 mmHg = 1.58 atm

V= ?

n= number of moles: 8.22 gram/molar mass SO₂ = 8.22 /64.064 = 0.128 mole

T=75C ==> =273.15+75=348.15 K (T must be in K!)

R= gas constant = 0.0821 L.atm/mol.K

 

So: PV=nRT = 1.68*V = 0.128*0.0821*348.15

1.68*V=3.66

 

V=3.66/1.68=2.17 L

 

good luck!