[toxic_ninja]

I had a redox lab a couple of days ago, and I'm supposed to turn in my lab report on Monday. I have a couple of questions that I need clearing up.  Any help is appreciated!

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1) 3ml of 0.1M KCl + 3ml of I₂. Put cork on test tube and shake. Next add chloroform.

At first the KCl and I₂ combined and formed a coloured solution. After the chloroform was added it dragged the I₂ out of solution, and back into elemental form.

I can't figure out why though?

2)3ml of 0.01M KMnO₃ + 1ml of 1M H₂SO₄.

Visually nothing happens, so I can't really tell, however after adding KBr, the purple solution turns to yellow, and then after chloroform is added, the Bromide falls out of solution.

3) 3ml of 0.01M KMnO₃ + H₂SO₄.  A small piece of Cu is added.

I didn't notice and change to anything in this reaction.

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Can anyone explain to my why what happens, happens in these reactions?

Any explanations?

Thanks in Advance!

[AWK]

I2 does not react with KCl. You can observe just color of iodine in water (yellow-brown). Iodine is good soluble in organic solvents. Its CCl4 or CHCl3 solutions are violet

KMnO3  - typo!
After addition of KBr or Cu to acidic KMnO4 you get a redox reactions