In organic chemistry,why does cyclohexane have 10 hydrogen atoms and not 12?

Answer 1

I think someone else already said it, but let me see if I can make it clear. Your question should actually be "If the formula for a chain hydrocarbon is C(sub)nH(sub)2n+2, why does cyclohexane have 12 hydrogen atoms instead of the 14 we should expect?" And the answer is that all saturated chain type hydrocarbons do have the C(sub)nH(sub)2n+2 formula, but cyclohexane is not a chain hydrocarbon it is a cyclic hydrocarbon. We make it by pulling off the two end cap hydrogens and hooking the two carbons together. Hmmm...we just lost 2 H's that would make cyclic hydrocarbons have the formula C(sub)nH(sub)2n

Answer 2

It does have 12 hydrogen atoms and not 10. Must be a misprint in your text. Each carbon atom has 2 hydrogen atoms and there are six carbon atoms. So 2 x 6 is 12. Not 10.

Oh, is there any possibility that it is "cyclohexEne" and not "cyclohexAne"? If -ENE there would be a double bond that would eliminate two hydrogen atoms.

Answer 3

Well first of all Cyclohexane does have 12 hydrogen atoms and hexane has 14.
If it was just hexane it would look like this
.. H H H H H H
H-C-C-C-C-C-C-H
.. H H H H H H
The drawing isn't perfect but that is the general idea. Carbon can attach to four elements because of its valence electrons. However when you loop it it loses the Hydrogen on the ends of the first and last carbon atoms. It would look something like this:
... H H H
.H-C-C-C-H
... /. H. /
... /. H. /
.H-C-C-C-H
... H H H
Again another poor illustration but I hope these help.

Answer 4

Uh a cyclohexane does have 12 hydrogen a cyclohexene has 10 since there is a double bond.

Answer 5

Cyclohexane has 12 H's.

Hexa = 6

Each carbon has 2 H's and there's a total of 6 carbons.

Answer 6

The molecular formula for Cyclohexane is C6H12. It does, indeed, have 6 Carbon atoms in a ring and 12 Hydrogen atoms, two Hydrogens per each Carbon.

The molecular formula for Cyclohexene is C6H10.

Answer 7

hydrocarbon is incorrect, hydrocarbons lack oxygen. The term is carbohydrate, meaning carbon (C) and water (H20). those are frequently refered to as sugars. you're stating chemical compounds with this ratio, which mean that this may be 5 carbons long or 6 carbons long, etc.... a subject-loose 6 carbon carbohydrate is glucose, additionally popular as dextrose or blood sugar.

Answer 8

becasue it has a cycle and for making a cycle , two hydrogene atoms shoud be reduces

Answer 9

one of the links in the benzene ring is a double bond