Oxidation-Reduction Reactions

Question 1

What is Oxidation?

Answer 1

• can be visualized as the loss of hydrogen (H2) or the gain of oxygen

Question 2

Oxidation of Alcohols

Answer 2

• remove H from OH group and other H from carbon to which OH is connected
• common oxidyizing agent
• K2Cr2O7/H2SO4, hot KMnO4, or CrO3/pyridine
• use [O] to indicate oxidizing reaction conditions

Question 3

Where does the bond have to be?

Answer 3

Between the carbon and the oxygen (in alcohols)

Question 4

Reduction of Aldehydes & Ketones

Answer 4

• the addition of hydrogen (H2) to the carbonyl group
• an aldehyde yields a primary alcohol
• a ketone yields a secondary alcohol

Question 5

Complete the following oxidation-reduction reaction by selecting the missing molecule.

CH3CH2CH2CH2CHO + H2 ->

Answer 5

CH3(CH2)3CH2OH