9. Alkanols Flashcards Preview

Higher Chemistry 2020-2021 > 9. Alkanols > Flashcards

Flashcards in 9. Alkanols Deck (16)
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1
Q

What is the functional group in Alkanols?

A

The hydroxyl group

2
Q

Why are alkanols miscible with water

A

The hydroxyl group is polar and can hydrogen bond with water molecules

3
Q

What are the 3 categories of alkanols?

A
  • Primary
  • Secondary
  • Tertiary
4
Q

What is a primary alkanol?

A

Carbon carrying OH groups is bonded to (at most) 1 other C atom

5
Q

What is a secondary alkanol?

A

Carbon carrying OH groups is bonded to 2 other C atoms

6
Q

What is a tertiary alkanol?

A

Carbon carrying OH groups is directly bonded to 3 other C atoms (one must be a branch group)

7
Q

Which categories of alkanols are able to undergo mild oxidation

A

Primary and secondary only

8
Q

What compounds are formed when primary alkanols are oxidised?

A

Step 1: Alkanals (aldehydes)

Step 2: Alkanoic acids

9
Q

Which compounds are formed when secondary alkanols are oxidised?

A

Alkanones (ketones)

10
Q

Hor copper oxide as an oxidising agent.

A

Colour change

Black to brown

11
Q

What is the reduction equation when hot copper oxide acts as an oxidising agent?

A
12
Q

Acidified potassium dichromate as an oxidising agent.

A

Colour change

Orange to green

13
Q

Why does potassium dichromate have to be acidified?

A

As a source of H+ (aq) ions

14
Q

What is the reduction equation when acidified potassium dichromate acts as an oxidising agent?

A
15
Q

Fehlings and Benedicts solutions as oxidising agents

A

Colour change

Blue to red (orange)

16
Q

What is the reduction equation when Fehlings or Benedicts solutions act as oxidising agents?

A