Answer to Question #154641 in Physical Chemistry for Chris

Question

Some acetone is poured into a thick-walled, 150 cm 3 test tube at 293 K and 100 kPa. The tube was then sealed and heated to 623 K. What is the maximum mass of acetone that can be used for this process if the pressure cannot exceed 5.00 MPa? The amount of air in the test tube can be neglected.

Answer 1

p*V = n*R*T;

5MPa = 49.3462 atm

n = p*V/R/T = (49.3462 atm)*(0.15 L)/(0.082 L*atm/mol/K)/(623 K) = 0.1449 mol

m = n*Mr = (0.1449 mol)*(58.08 g/mol) = 8.4153 g