Physical Chemistry Answers

Calculate the value of the translational partition function of O2 at 1000 K for a volume of 1 m3. Submit your answer multiplied by 10−32 (i.e. if you calculate 4.2e33, input 42).

(b) A balloon filled with nitrogen has a volume of 2.5dm3 at a pressure of 1.0 atm at 25°C.What will be
the volume of balloon when it is cooled to -73 °C, assuming that the pressure remains constant?

Aluminium metal can be made from aluminium ions by electrolysis. What mass of aluminium metal would be recovered if a current of 2.50 × 103 A passed through the solution for 15.0 minutes? Assume the yield is 100%.
A. 210 g
B. 105 g
C. 70 g
D. 240 g

Consider the molecule D-glucose, C6H12O_6, the base molecule in cellulose. Calculate the total number of rotational modes (these will be integer values).

Consider the molecule D-glucose, C6H12O6, the base molecule in cellulose. Calculate the total number of translational modes (these will be integer values).

Calculate the value of the translational partition function of O2 at 1000 K for a volume of 1 m3. Submit your answer multiplied by 10−32 (i.e. if you calculate 4.2e33, input 42).

To what temperature must 30.0dm3 of helium at 25°C be cooled at 1 atm pressure for its volume to
be reduced to 1.0dm3 at same pressure?

2. An automobile tyre of volume 28dm3

is filled with air at a pressure of 1 atm.What volume does this air

occupy at higher pressure 2.5 atm with the same temperature?

Under what conditions does the behaviour of real gases deviate from that predicted by the ideal gas law?