Question

One of the hydrocarbons react with one mole of hydrogen to form a saturated hydrocarbon. What is formula of the X?

Answer 1

Answer:

It could be an open-chain monoalkene, with general formula  CnH2n .

It could be a monocyclic alkene, with general formula  CnH2n−2 .

It could be a bicyclic alkene, with general formula  CnH2n−4 .

And so on and so on.

All of these will react with one equivalent of  H2  to form a saturated hydrocarbon. Remember, “saturated” means “no multiple bonds,” not “no rings.”