Chlorine dioxide, ClO2, is a reddish-yellow gas that issoluble in water, in basic solution it givesClO3- and ClO2- ions:
2ClO2 (aq) + 2OH-(aq) -> ClO3- (aq) + ClO2- (aq)+ H2O

To obtain the rate law for this reaction, the following threeexperiments were run and, for each, the initial rate of reaction ofClO2 was determined.

Initial Concentration(mol/L)
ClO2 Initial Concentration(mol/L)
OH- Initial Rate
(mol/((L s))

Exp. 1 0.060 0.030 0.0248

Exp. 2 0.020 0.030 0.00276

Exp. 3 0.020 0.090 0.00828

Exp. 4 0.040 0.060 ?
Question:

a) What is the rate law equation for the reaction ? Rate =

ans: k[ClO2]2[OH-]

b) Find the value of the rate constant, k.
ans: 230 M-2 s-1.

c) Predict an initial rate for the Experiment #4.
ans: 0.0221 mol/(L s).

This is from my old quiz; but I could not separate the question;I already have answers;

You can separate answers; Thank you.