PASS MOCK EXAM – FOR PRACTICE ONLY
Course: __CHEM 1001 A/T___ Facilitator: _Saumya Bansal____
Dates and locations of mock exam take-up: Wednesday 4 – 5 30 (SA 502) Wednesday 6 30 – 8 (ME 3269) , Extra session maybe on Thursday (details in class)
It is most beneficial to you to write this mock midterm UNDER EXAM CONDITIONS. This means:
1. • Complete the midterm in __1.5_ hour(s).
2. • Work on your own.
3. • Keep your notes and textbook closed.
4. • Attempt every question.
After the time limit, go back over your work with a different colour or on a separate piece of paper and try to do the questions you are unsure of. Record your ...view middle of the document...
Handouts may contain errors, intentional or otherwise. It is up to the student to verify the information contained within. PLEASE NOTE: THIS HANDOUT IS NOT TO BE POSTED ON THE INERNET
ΔHNH3 = -45.9 kJ/mol
ΔHNO = 91.3 kJ/mol
ΔHH2O = -241.8 kJ/mol
ΔHHNO3 = -133.9 kJ/mol
R = 0.082 L atm K-1 mol -1
R = 8.314 L kPa K-1 mol -1
Part A. Answer each of the six questions with a few sentences or equations where necessary.
(5 Marks each)
1: In the van der Waals equation, why is the ‘a’ term for H2O larger than that for CO2?
2: Show the reactions in the catalytic cycle by which Cl atoms destroy ozone in the stratosphere.
3: Define what ‘Enthalpy of Formation of a compound’ means.
4: Name three ways that hydrogen might be stored in an automobile for use as a fuel.
5: Give two reasons why gases become less ideal at higher pressures.
6: What is the difference between a path function and state function? What kind of function is enthalpy? What kind of function is work?
Part B. Try to answer all 3 for the Mock. On the actual midterm only 2 out of the 3 will count.
B1. [6 marks] (a) At a particular temperature and pressure, it takes 4.55 minutes for a 1.5 L sample of He(g) to effuse through a porous membrane. How long will it take for 1.5 L of F2(g) to effuse under the same conditions?
(b) [6 marks] A sample of Freon-12 (CF2Cl2) occupies 24.5 L at 298 K and 253.3 kPa. Find its volume at STP.
(c) [8 marks] Chlorine is produced electrochemically from seawater and collected in a sealed container. If a...