Question

Find the order of the reaction for the dye and the units for k'.

I am not sure what data is needed so I just paste them all, hope it helps, thank you!

Rate = k[dye]^m[OCl^-]ⁿ
Rate = k'[dye]^m where k' = k[OCl^-]ⁿ

Molar concentration of the dye stock solution: 2.52e-5 mol/L

Operating Wavelength: 631 nm

Solutions	Volume(mL) of Blue#1 stock solution	Volume(mL) of distilled H20	Absorbance (A) (a.u.)
1	1.00	19.00	0.052
2	2.00	18.00	0.121
3	4.00	16.00	0.213
4	8.00	12.00	0.537

[dye] = 1.96×10^-5x A

Solutions (Dilutions)	OCl- Concentration mol/L
Experiment 1	0.034
Experiment 2	0.067
Experiment 3	0.13

Experiment 1
Time (s)	Absorbance (a.u.)	[dye] (mol/L) x 10-6
15	0.980	19.2
30	0.941	18.4
45	0.909	17.8
75	0.849	16.6
90	0.808	15.8
105	0.781	15.3
120	0.750	14.7
135	0.721	14.1
150	0.690	13.5
165	0.660	12.9

Experiment 2
Time (s)	Absorbance (a.u.)	[dye] (mol/L) x 10-6
15	0.863	16.9
30	0.789	15.4
45	0.720	14.1
60	0.652	12.8
75	0.592	11.6
90	0.538	10.5
105	0.486	9.51
120	0.441	8.63
135	0.397	7.77
150	0.358	7.01

Experiment 3
Time (s)	Absorbance (a.u.)	[dye] (mol/L) x 10-6
10	0.747	14.6
20	0.649	12.7
30	0.563	11.0
40	0.486	9.51
50	0.418	8.18
60	0.361	7.06
70	0.310	6.07
80	0.267	5.22
90	0.228	4.46
100	0.197	3.85

Answer 1

The order of above reaction is 2 i.e. reaction a second order and the unites of K for second order reaction are

where M is mole and s in seconds.