Chemistry 2000, Section A
Spring 1996 Test 1

All questions are equally weighted. Bonus mark policy: Bonuses are applied to this test and to the last assignment, to a cumulative maximum of 15/15 (100%).

1. Suppose that a chemist measures the rate of appearance of a product P as a function of concentration for the reaction :

   

   What is the experimental rate equation for [P]?

2. The following data is obtained for the reaction :

   

   What is the order of the reaction with respect to A and what is the rate constant?

3. Sulphur dioxide is formed from sulphur monoxide in the atmosphere by the elementary reaction

   

   For this reaction, at C and at C. What is the activation energy of the reaction?

   Bonus:

   Also calculate .

4. 1. Write down the rate equations for the mechanism

      

   2. Write down an expression for the rate of formation of the product P if the first step is rate-limiting.
   3. Bonus: What would the experimental rate law for the formation of P be if the first step were rate-limiting and the reactant A were present in huge excess?
5. CANDU nuclear fission reactors produce (among other things) a significant amount of . The half-life of is 24100 years. A sample is considered safe when 99.9% of the plutonium has decayed. How long does this take?