4. A reaction involves T as one of the reactants. Following the change in concentration of T over time yields the graph below. What does the graph tell us about the rate of reaction AND the order with respect to T?
It is constant (constant slope), it is zero order with respect to T.
Kinetics Summary Worksheet
5. C decomposes to form D. The following results were obtained by experiment.
What is the rate expression (equation)? What is the overall order of the reaction?
Rate = k
Overall order = zero order.
Kinetics Summary Worksheet
6. The reaction where A reacts with B to give P, is found to be first order with respect to both A and to B. When the initial concentrations of [A] = 3.30 10-6 mol L-1 & [B] = 2.85 10-3 mol L-1, the initial rate of reaction is 3.45 10-4 mol L-1 min-1. Calculate the rate constant for the reaction (include units).
7. In the reaction A + B Products the following results were obtained for the initial rates of reaction for different initial concentrations.
Deduce the rate equation (explaining carefully how you reached your answer) and calculate the rate constant (include units).
Rate = k [A][B]
Kinetics Summary Worksheet
7. In the reaction A + B Products the following results were obtained for the initial rates of reaction for different initial concentrations.
Deduce the rate equation (explaining carefully how you reached your answer) and calculate the rate constant (include units).
First order with respect to A. Doubling A while keeping B constant causes the rate to double (Experiment #1 and #2)
First order with respect to B. Consider experiments #2 and #3. Doubling A should result in a doubling of rate from 0.004 to 0.008 (since reaction is first order with respect to A). The rate actually doubles again to 0.016 due to the doubling of B, i.e. first order with respect to B
Kinetics Summary Worksheet
8. What three criteria must be met if a reaction between two reactants is to take place?
(i) Reactants must collide
(ii) Reactants must collide with sufficient energy (activation energy)
(iii) Reactants must collide with the correct collision geometry (orientation)
