[darknietzsche]

I am having trouble converting a rate in the units of rate from ml/min to M/min with the given information.

I have determined the rate to be 8.42 ml/min.

I also know that the rate=k[H₂O₂]¹[I^-]¹

Also, I know that there is 50 ml of 3% of H₂O₂ 50 ml of .1M of KI, and 50 ml of water.

All I need to know is to be able to convert the rate to M/min. I am sure that it is something simple that I am overlooking. I need the rate to be converted because I need to be able to find the the rate constant.

[Borek]

8.42 ml/min

mL of what?

[darknietzsche]

The 8.42 ml/min is the rate of solution being expelled per minute.

[enahs]

What are the ratios of the chemicals of the 8.42mL/min?
You need a balanced equation for that, and going back and forth from volume to mols and such, using density and MW, etc.

[darknietzsche]

the reaction is the decomposition of hydrogen peroxide so,

H₂O₂ + I^----> H₂O + IO^-  (slow)

H₂O₂ + IO^- ---> H₂O + O_2(g) (fast)

The solution is 50 ml of 3% H₂O₂, 50 ml of .1M KI, and 50 ml of water.

We did this in a lab situation. We reacted these chemicals and placed it in a bottle where the oxygen build-up could expel the solution at a certain rate, thus the 8.42 ml/min is the rate that the solution was expelled with the build up of oxygen.

[Borek]

So it is 8.42 mL of oxygen produced per minute.

[darknietzsche]

Actually I am not sure. The rate is the rate of reaction so it could possibly be. We did the reaction in a washing bottle. So as Oxygen is produced it forces the solution out of the washing bottle at a specific rate thus the 8.42 ml/min which we had to calculate.