Question

in order to determine the rate constant of a chemical reaction between H2O2 and KI in the laboratory, 0.05M H2O2 solution in the presence of sulphuric acid H2SO4. the progress of the reaction was followed by adding 2ml portion of 0.02M Na2S2O3 to the mixture of H2O2, KI and H2SO4 in a thermostated water bath at 27C and 37C. the results obtained are summarize below: volume of Na2S2O3; 2, 4, 6, 8, 10. time (s) at 27C; 315, 580, 1005, 1365, 1500. time (s) at 37C; 150, 290, 432, 657, 870. (1) form an appropriate graph, and determine the value of the rate constant K1 and K2. (2) calculate the activation energy for the reaction. (3) the rate constant k1 was determined at different initial concentration of H2O2 and the results are given below: [H2O2] concentration; 12.55, 25.05, 30.05, 40.05, 50.05. K1 (s-1); 2.65, 4.35, 6.15, 8.05, 9.95. determine K2 from the appropriate graph of the above data

          in order to determine the rate constant of a chemical reaction between H2O2 and KI in the laboratory, 0.05M H2O2 solution in the presence of sulphuric acid H2SO4. the progress of the reaction was followed by adding 2ml portion of 0.02M Na2S2O3 to the mixture of H2O2, KI and H2SO4 in a thermostated water bath at 27C and 37C. the results obtained are summarize below: volume of Na2S2O3; 2, 4, 6, 8, 10.  time (s) at 27C; 315, 580, 1005, 1365, 1500.   time (s) at 37C; 150, 290, 432, 657, 870.    (1) form an appropriate graph, and determine the value of the rate constant K1 and K2.  (2) calculate the activation energy for the reaction.  (3) the rate constant k1 was determined at different initial concentration of H2O2 and the results are given below: [H2O2] concentration; 12.55, 25.05, 30.05, 40.05, 50.05.  K1 (s-1); 2.65, 4.35, 6.15, 8.05, 9.95.   determine K2 from the appropriate graph of the above data

Added by Oluwasegun S.

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