Aldehydes

Saba Nasrolahi
Quiz by Saba Nasrolahi, updated more than 1 year ago
Saba Nasrolahi
Created by Saba Nasrolahi almost 4 years ago
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If you get any wrong, what even are you Gareth

Resource summary

Question 1

Question
In aldehydes, the carbonyl group has a hydrogen atom attached to it together with either:
Answer
  • a second hydrogen atom or, more commonly, a hydrocarbon group which might be an alkyl group or one containing a benzene ring
  • a third hydrogen atom with another R group
  • one hydrogen atom with two R groups

Question 2

Question
How do you make aldehydes?
Answer
  • by oxidising primary alcohols
  • by a reflux experiment
  • By heating up a ketone

Question 3

Question
Which is an aldehyde?

Question 4

Question
Are aldehydes soluble?
Answer
  • Yes
  • No
  • Only short chain aldehydes

Question 5

Question
Which statement is true?
Answer
  • An aldehyde differs from a ketone by having a hydrogen atom attached to the carbonyl group. This makes the aldehydes very easy to oxidise.
  • An aldehyde and a ketone are very similar and act in the same way when you try to oxidise them
  • Ketones have that hydrogen atom and are not resistant to oxidation.

Question 6

Question
Aldehydes are...
Answer
  • usually more reactive toward nucleophilic substitutions than ketones because of both steric and electronic effects.
  • atomically extremely heavy
  • do not oxidise
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