Reaction between propanone and iodine~

[vickymouse]

1. Write a balanced chemical equation to represent the reaction between iodine and propanone in acidic medium.

2. Explain why the concentration of iodine in the reaction mixture can be expressed in terms of the volume of sodium thiosulphate added.

3. Does iodine take part in the rate determining step of the reaction between iodine and propanone?

 

Thanks a lots!

[John Cuthber]

Well, the first step is to find out what the products are. Do you know that?

[vickymouse]

Is it I ion?

 

P.S. My chemistry is really poor..(but also my English..)..

I come from Hong Kong..

 

 

[John Cuthber]

The iodide ion is one product.

Do you know what the other product or products are?

You need to know all of them to write a balanced equation.

[mississippichem]

You should look up [math]\alpha[/math]-halogenation of ketones. This is a fairly common reaction. Depending on what level chemistry student you are, you might need some information on tautomers to make sense of how the product formed.

Edited December 4, 2010 by mississippichem