[hockey101]

Ok, I am not understanding a clue on how to do this problem.

Here is the question

Draw and name all of the possible dichloropropanes that can result from the chlorination of propane. (4 possible)

Where do I even start?  My teacher just barely went over this today and we didn't even do an example so we would know how to do it so I have nothing to look at to see.  I checked the book and I couldn't understand what they were talking about and what they say is different than what I have in my notes.

Any suggestions on where to start?

[Borek]

Draw propane. Chlorination in this context means hydrogen is replaced by chlorine. Dichloro- means two hydrogens are replaced.

[hockey101]

Ok so Propane is CH₃-CH₂-CH₃

But I'm still confused on where to put the chlorines.  I came out with like 8 of dichloropropanes.

[sankalpmittal]

Yes just look for possibilities. 4 dichloropropanes are possible. What can they be ?

[Borek]

I came out with like 8 of dichloropropanes.

Which most likely means some of them are identical, you are just seeing them from different angles.

For example, these two:





are in fact one and the same.