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How do aldehyde and ketone structures differ?

Answer 1

They both have a oxygen atom double-bonded to a carbon.

The difference is that in a ketone (suffix -one) the #O=# is bonded to a #C# with two other #C#'s attached. In the aldehyde (suffix -al) the #C# is at the end of the chain, so there is also a #H# attached to it.

This combination of #O# and #H# on the same #C# makes it possible for the aldehyde group to oxidize into a #-COOH# (acid) group, while the ketone group cannot.
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Answer 2
Jacob Anderson
Aldehydes have a hydrogen atom attached to the carbonyl group, while ketones have two carbon groups attached to the carbonyl group.
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Answer 3
Ellie Adams
The main structural difference between aldehydes and ketones lies in their functional groups. Aldehydes contain a carbonyl group (C=O) bonded to at least one hydrogen atom, which is located at the end of a carbon chain. Ketones, on the other hand, also contain a carbonyl group, but it is bonded to two carbon atoms within the carbon chain. In summary, aldehydes have the general structure RCHO, while ketones have the general structure RCOR', where R and R' represent alkyl or aryl groups.
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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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