[heyimjoe]

Hi guys,
I was wondering if you could tell me what observation would be made when following reactions take place;

Cyclohexane + concentrated sulphuric acid are mixed together

Cyclohexene + concentrated sulphuric acid are mixed together

[Arkcon]

I'd like to welcome you, heyimjoe: to the Chemical Forums.  According to the Forum Rules{click}, we want to see your attempt, so please click on that link, read the contents, and comply with our rules, so we can help you. 

Do you know anything about how these reagents are used?  Its hard to gauge, from your question, what your level of knowledge is.

[heyimjoe]

Well basically, i was away during the time we carried out the experiment. But what I've got so far is the following -

The cyclohexane initially mixed together, but divided into seperate layers (i think this one is correct) with the concentrated sulfuric acid on the bottom.

However for the cyclohexene a brown ring formed and there was a colourless solution above and below. I don't know if this is correct? Because alot of sites are saying different things ha!

[pgk]

Simple mixing does not always mean a chemical reaction.
Different layers means that the materials are not miscible.
Quuestion1: Does cyclohexane react with concentrated sulfuric acid?
Question 2: If no, why?
Question 3: Does cyclohexene react with concentrated sulfuric acid?
Question 4: If yes, why and what is the product?
Question 5: If any product formed, is it miscible with cyclohexene and/or concentrated sulfuric acid?