Find the rate law constant and the order of the reaction a and b K[H2O]a[I-]b Concentrations: Starch 0.01 mol/L Buffer 0.5 mol/L Thiosulfate 0.02 mol/L Kl 0.25 mol/L H2O2 0.12 mol/L New concentrations after dilutions Reaction # V S2O3 (ml) V Kl (ml) V H2O2 (ml) Final volume (ml) S2O3 final M (mol/L) Kl final M (mol/L H2O2 final M (mol/L) t initial (s) t final (s) Rate S2O3 Rate of the reaction Log of rates Log of I Log of H2O2 1 5 6 5 100 0.001 0.015 0.006 81 718 7.85E-07 7.85E-07 -6.105169428 -1.823908741 -2.22184875 2 5 6 10 100 0.001 0.015 0.012 241 572 1.51E-06 1.51E-06 -5.820857989 -1.823908741 -1.920818754 3 5 6 15 100 0.001 0.015 0.018 351 563 2.36E-06 2.36E-06 -5.627365857 -1.823908741 -1.744727495 4 5 6 20 100 0.001 0.015 0.024 483 648 3.03E-06 3.03E-06 -5.51851394 -1.823908741 -1.619788758 5 5 2 15 100 0.001 0.005 0.018 0 600 8.33E-07 8.33E-07 -6.079181246 -2.301029996 -1.744727495 6 5 4 15 100 0.001 0.01 0.018 0 334 1.50E-06 1.50E-06 -5.824776462 -2 -1.744727495 7 5 6 15 100 0.001 0.015 0.018 166 379 2.35E-06 2.35E-06 -5.629409599 -1.823908741 -1.744727495 8 5 8 15 100 0.001 0.02 0.018 749 910 3.11E-06 3.11E-06 -5.507855872 -1.698970004 -1.744727495

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter14: Chemical Kinetics: The Rates Of Chemical Reactions

Section: Chapter Questions

Problem 84GQ

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Question

Find the rate law constant and the order of the reaction a and b

K[H2O]^a[I^-]^b

Concentrations:		Starch		0.01 mol/L
		Buffer		0.5 mol/L
		Thiosulfate		0.02 mol/L
		Kl		0.25 mol/L
		H2O2		0.12 mol/L

New concentrations after dilutions

Reaction #	V S2O3 (ml)	V Kl (ml)	V H2O2 (ml)	Final volume (ml)	S2O3 final M (mol/L)	Kl final M (mol/L	H2O2 final M (mol/L)	t initial (s)	t final (s)	Rate S2O3	Rate of the reaction	Log of rates	Log of I	Log of H2O2
1	5	6	5	100	0.001	0.015	0.006	81	718	7.85E-07	7.85E-07	-6.105169428	-1.823908741	-2.22184875
2	5	6	10	100	0.001	0.015	0.012	241	572	1.51E-06	1.51E-06	-5.820857989	-1.823908741	-1.920818754
3	5	6	15	100	0.001	0.015	0.018	351	563	2.36E-06	2.36E-06	-5.627365857	-1.823908741	-1.744727495
4	5	6	20	100	0.001	0.015	0.024	483	648	3.03E-06	3.03E-06	-5.51851394	-1.823908741	-1.619788758
5	5	2	15	100	0.001	0.005	0.018	0	600	8.33E-07	8.33E-07	-6.079181246	-2.301029996	-1.744727495
6	5	4	15	100	0.001	0.01	0.018	0	334	1.50E-06	1.50E-06	-5.824776462	-2	-1.744727495
7	5	6	15	100	0.001	0.015	0.018	166	379	2.35E-06	2.35E-06	-5.629409599	-1.823908741	-1.744727495
8	5	8	15	100	0.001	0.02	0.018	749	910	3.11E-06	3.11E-06	-5.507855872	-1.698970004	-1.744727495

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