Oxidisation Of Alcohols

Question 1

Define oxidisation

Answer 1

C gains more electronegative atoms i.e., oxygen

Question 2

What happens to the C-H bonds during oxidisataion

Answer 2

Get used up to create C-O/C=O bonds

Question 3

Strong oxidising reagent

Answer 3

H2CrO4

Question 4

H2CrO4 with primary alcohol

Answer 4

Straight to a carboxylic acid (-COOH)

Question 5

Mild oxidising agent

Answer 5

PCC

Question 6

PCC with primary alcohol

Answer 6

Creates aldehyde (C=O end of carbon chain)

Question 7

Oxidising reagent with secondary alcohol

Answer 7

Makes a ketone (R-C=O-R in between C chain)

No more C-H bonds available, no further oxidisation

Question 8

Does it matter which oxidising reagent is used with secondary alcohol? Explain why.

Answer 8

No because secondary alcohol only has one available C-H bond, when oxidised with either oxidising reagent, only a ketone is made which is a C=O in between the C chain and no more C-H bonds, therefore no more oxidisation.

Question 9

Does tertiary alcohol undergo oxidisation? Explain why.

Answer 9

No because tertiary alcohol has no available C-H bonds and oxidisation requires C-H bonds to make C-O/C=O bonds.