1.   An example of oxidation is:

1.    Fe³⁺ ® Fe²⁺
2.    CH₂=CH₂ ® CH₃.CH₃
3.    CH₃.CH₂OH ® CH₃.CO₂H
4.    NAD⁺ ® NADH
5.    CH₃.CO₂H ® CH₃CO₂^-

2.    An example of reduction is:

1.    Fe³⁺ ® Fe²⁺
2.    CH₃.CH₂OH ® CH₃.CO₂H
3.    NADH ® NAD⁺
4.    glucose ® carbon dioxide
5.    CH₃.CO₂^-® CH₃.CO₂H

3.     When one molecule of cytochrome c is oxidised:

1.    Fe³⁺ is converted to Fe²⁺
2.    Fe²⁺ is converted to Fe³⁺
3.    it loses a pair of electrons
4.    it gains a pair of electrons
5.    it gains a hydrogen atom

4.     Which one of the following is an oxidation?:

1.     CH₂OH.CO.CH₂OH ® CH₂OH.CHOH.CH₂OH
2.     CH₃.CHO ® CH₃.CH₂OH
3.     NAD⁺ ® NADH
4.     Fe³⁺ ® Fe²⁺
5.     Cu⁺ ® Cu²⁺
 
 

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