A + B → P Initial Rate Experiment Number [A] M [B] м (M/s) 1 0.273 0.763 2.83 0.273 1.526 2.83 3 0.819 0.763 25.47 The order of the reaction in A is: The order of the reaction in B is: The overall order of the reaction is:

6) The decomposition of reactant R was studied, and the data given below was obtained at 100.0 °C: R> products time (min) concentration (M) 0.120 35.6 5.83 17.8 25.6 0.0910 0.060 0.046 0.030 a) What is the half-life of the reaction in minutes? Explain. b) Various plots of the concentration of the reactant versus time are given below. What is the order of the reaction? Explain. ILD is 20 time (min) time (min) 05 -35 time (min) c) What is the value of the rate constant at 100.0 °C? d) Would you expect the half-life of the reaction to be longer, shorter, or the same at 60.0 °C? Explain. e) The activation energy in the forward direction is 95.0 kl/mol, and the enthalpy change for the forward reaction is 30.0 kl/mol. Sketch the reaction coordinate diagram for this reaction. ERER AR

(c) A reaction between substances R and S was second order with respect to R and second order with respect to S. S-or x 8.1 0.3 At a given temperature, the initial rate of reaction was 1.20 x 10-3 mol dm-3 s-1 when the initial concentration of R was 1.00 x 10-2 mol dm-3 and the initial concentration of S was 2.45 x 10-2 mol dm-3 acom ton Scor 0.8 Calculate a value for the rate constant, k, for the reaction at this temperature. Give the units for k rose ni to nollbeen to stist leitini ert worla of SeldsT otalama) (B) S eldsT amb tom \\ els fallinl Ot *8.1 Inomheqx3

A certain reaction is first order in N, and second order in H,. Use this information to complete the table below. Round each of your answers to 3 significant digits. [N] [1] initial rate of reaction 1.50 M 2.34 M 77.0 M/s O M/s 2.12 M 2.34 M O M/s 0.300 M 11.7 M