More functional groups | Organic chemistry | Khan Academy

[@VndNvwYvvSvv]

One small point on the generic/formula drawing of the acyl/acid halide: It should be R-C(O)-X to not imply that it must be a chlorine.

[@nohbody-mb4xc]

Very helpful!!

[@marjanbonyadi3118]

Amazing teacher

[@blabbityblah]

that aldehyde must be the butt of every chemistry joke.

[@manicpixiedreamgirl7930]

Thanks!

[@agent475816]

1:10 why would it be butane if the last carbon is part of the aldehyde group? Shouldn't it be propyl aldehyde?

[@aayhabdelgawad1382]

+agent475816 You never end it with aldehyde..Also there are 4 carbons it cant be propyl.. The final name is butanal .. the al at the end indicates an aldehyde group. Hope this helps.

[@agent475816]

Ayah Abdel Yes it helps. I just thought that the group (CHO) is the aldehyde group and the carbon doesn't count when you're naming it. That's why I thought it would be propanal.

[@VndNvwYvvSvv]

@@agent475816 They easily could have done that instead since the carbonyl carbon is considered part of the functional group. They chose not to, maybe because it would you with methanal as CH3C(O)H, and then you have no meth/eth/prop/but names for formaldehyde, C(O)H. Instead, we consider the carbonyl carbon to be both part of the carbonyl group and the main carbon chain. This fixes that potential naming inconsistency. You also would h ave a conflict with naming if you performed a reaction that changed that aldehyde group. You'd be changing a 2-carbon "methanal" into a eth-something, 2 different carbon-counting names with the same chain. I know this is 4 years old, but I hope this clarifies for anyone else who sees the same possibility and wonders why it's this wayy.