What would be the whole name of 2-butene and hydroiodic acid. Or the diagram.

h
h

Any help would be greatly appreciated.

2 answers

h h h h
| | | |
h---c--C====c---c---h
| | | |
h h h h

This is 2-butene where do I insert the HI for hydroiodic aci?
As I suggested two days ago, you add it across the double bond. That is, break the double bond so you have a single bond to single bond C, then to the left C place the H from HI and to the right C place the I so you will have CH3CH2CHICH3. I would then name that compound as 2-iodobutane.