OC - boiling, melting points

[ak47]

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okay so what is the order of who has the highest and lowest among function groups...

i have (increasing boiling points'0:

alkanes

aldehydes/ketones

alcohols

carboxylic acids



where do amines go? aldehyde or ketones are higher?

thanks!

 

[Sea of ASH]

i thought alcohols have the highest bp cuz they got the strongest h-bonds... 😕

 

[Simiam]

Carboxylic Acids are able to dimerize? IE form two Hydrogen bonds between the carbonyl oxygen and the alcohol group. They have the highest BP because of that...

 

[mddang]

alkanes

aldehydes/ketones

amines

alcohols

amides (I think..)

carboxylic acids


Primary and secondory amines contain N-H bonds, so they are able to H-bond with each other. However, the N-H bond is not as polar as the O-H bond seen in alcohols and carboxylic acids, so their boilings points are generally lower.

 

[vvvv]

okay so what is the order of who has the highest and lowest among function groups...

i have (increasing boiling points'0:

alkanes

aldehydes/ketones

alcohols

carboxylic acids


where do amines go? aldehyde or ketones are higher?

thanks!

depend on if it is primary or sec or tert