Yes, that is right.
Original post by 5hyl33n
Yes, that is right.
I know it may seem a dumb question, however, are cycloalkanes classified as alkanes? Or are they classified as alkenes?
Original post by Medikj
I know it may seem a dumb question, however, are cycloalkanes classified as alkanes? Or are they classified as alkenes?
They are alkanes. Clue is in the name - cycloalkane.
Original post by Deggs_14
They are alkanes. Clue is in the name - cycloalkane.
Thank you!
Original post by Deggs_14
They are alkanes. Clue is in the name - cycloalkane.
Alkanes have the general formula CnH2n+2.
Cycloalkanes have the general formula CnH2n.
Cylcoalkanes are not alkanes.
Original post by Pigster
Alkanes have the general formula CnH2n+2.
Cycloalkanes have the general formula CnH2n.
Cylcoalkanes are not alkanes.
Cycloalkanes have the general formula CnH2n.
Cylcoalkanes are not alkanes.
This is wrong. They are a type of alkane actually because they are saturated, hence the name cycloalkane. They have no carbon - carbon double bonds. Hence do not have a reaction with bromine water, and do not turn it from brown to colourless. This mean they fit the definition of an alkane. They may have a different formula, but due to their saturation, they are alkanes.
Original post by Pigster
Alkanes have the general formula CnH2n 2.
Cycloalkanes have the general formula CnH2n.
Cylcoalkanes are not alkanes.
Cycloalkanes have the general formula CnH2n.
Cylcoalkanes are not alkanes.
Would they be considered as a saturated hydrocarbon then, of which cycloalkanes and alkanes both are?
(edited 4 years ago)
Original post by Jamie_1712
This is wrong. They are a type of alkane actually because they are saturated, hence the name cycloalkane. They have no carbon - carbon double bonds. Hence do not have a reaction with bromine water, and do not turn it from brown to colourless. This mean they fit the definition of an alkane. They may have a different formula, but due to their saturation, they are alkanes.
To use your words against you:
Alcohols are saturated. They have no carbon - carbon double bonds. Hence do not have a reaction with bromine water, and do not turn it from brown to colourless. This mean they fit the definition of an alkane. They may have a different formula, but due to their saturation, they are alkanes.
The definition of alkane vs cycloalkane does not depend on properties.
IUPAC defines alkanes as "acyclic branched or unbranched hydrocarbons having the general formula CnH2n+2, and therefore consisting entirely of hydrogen atoms and saturated carbon atoms"
Do you know what acyclic means?
Original post by Deggs_14
Would they be considered as a saturated hydrocarbon then, of which cycloalkanes and alkanes both are?
Read my post, yes. However cycloalkanes are alkanes as the definition is to be saturated.
In year 2 A level chemistry you’ll learn about unsaturated alkanes, specifically benzene which is a super interesting molecule and has many unique properties.
Original post by Deggs_14
Would they be considered as a saturated hydrocarbon then, of which cycloalkanes and alkanes both are?
Yes.
The name cycloalkane probably comes from the fact that they have similar properties and reactions to alkanes, but they aren't themselves alkanes.
Original post by Pigster
To use your words against you:
Alcohols are saturated. They have no carbon - carbon double bonds. Hence do not have a reaction with bromine water, and do not turn it from brown to colourless. This mean they fit the definition of an alkane. They may have a different formula, but due to their saturation, they are alkanes.
The definition of alkane vs cycloalkane does not depend on properties.
IUPAC defines alkanes as "acyclic branched or unbranched hydrocarbons having the general formula CnH2n+2, and therefore consisting entirely of hydrogen atoms and saturated carbon atoms"
Do you know what acyclic means?
Alcohols are saturated. They have no carbon - carbon double bonds. Hence do not have a reaction with bromine water, and do not turn it from brown to colourless. This mean they fit the definition of an alkane. They may have a different formula, but due to their saturation, they are alkanes.
The definition of alkane vs cycloalkane does not depend on properties.
IUPAC defines alkanes as "acyclic branched or unbranched hydrocarbons having the general formula CnH2n+2, and therefore consisting entirely of hydrogen atoms and saturated carbon atoms"
Do you know what acyclic means?
Well no, because alcohols don’t only contain carbon and hydrogen, so that’s just irrelevant to the discussion.
I believe I may stand corrected. In any case, in an exam if you’re asked what type of molecule a ringed saturated hydrocarbon is, the answer would be cycloalkane.
Original post by Pigster
Yes.
The name cycloalkane probably comes from the fact that they have similar properties and reactions to alkanes, but they aren't themselves alkanes.
The name cycloalkane probably comes from the fact that they have similar properties and reactions to alkanes, but they aren't themselves alkanes.
I thought the “cyclo” part denoted the cyclic structure of the hydrocarbon, but that’s interesting to consider. Anyways thank you for clarifying
Original post by Jamie_1712
Well no, because alcohols don’t only contain carbon and hydrogen
Your earlier description of alkanes did not include reference to C and H.
Chemistry is all about pedantic definitions and this is an example. Just because a name suggests one thing, doesn't necessarily mean it means it.
Original post by Pigster
Your earlier description of alkanes did not include reference to C and H.
Chemistry is all about pedantic definitions and this is an example. Just because a name suggests one thing, doesn't necessarily mean it means it.
Chemistry is all about pedantic definitions and this is an example. Just because a name suggests one thing, doesn't necessarily mean it means it.
Source: https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Supplemental_Modules_(Organic_Chemistry)/Hydrocarbons/Alkanes
Wait, then why does this say they are? It’s a pretty reliable source
Original post by Medikj
Source: https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Supplemental_Modules_(Organic_Chemistry)/Hydrocarbons/Alkanes
Wait, then why does this say they are? It’s a pretty reliable source
Wait, then why does this say they are? It’s a pretty reliable source
For this kind of stuff, there is no higher power than IUPAC. They make the rules that we all abide by.
Your source contains a mistake, therefore.
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