reduction and oxidation reducation Flashcards

1
Q

what is a reaction which undergoes both reduction and oxidation called?

A

redox reduction

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2
Q

describe oxidation in terms hydrogen, electron and oxygen

A

oxidation undergoes
1: lost of hydrogen
2: lost of electron
3: gain in oxygen

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3
Q

describe reduction in terms hydrogen, electron and oxygen

A

reduction undergoes
1:gain in hydrogen
2; gain of electron
3: lost in oxygen

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4
Q

describe oxidation in terms of oxidation number

A

increase in oxidation number as a result of lost of electrons

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5
Q

describe reduction in terms of oxidation number

A

decrease in oxidation number as a result of gain in electrons

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6
Q

what are the 3 types of alcohols?

A

1-primary alcohol
2- secondary alcohol
3- tertiary alcohol

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7
Q

define primary alcohol

A

an alcohol which has one carbon attached to carbon bonded to hydroxyl group

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8
Q

define secondary alcohol

A

an alcohol which has 2 carbon attached to carbon bonded to hydroxyl group

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9
Q

define tertiary alcohol

A

an alcohol which has 3 carbon attached to carbon bonded to hydroxyl group

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10
Q

what functional group do ketones have?

A

a carbonyl group C=O

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11
Q

what functional group do aldehydes have?

A

C double bonded to O and single bond to H

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12
Q

what do primary alcohols oxidize to

A

1- aldehyde using a weak oxidant
2- carboxylic acid using a strong oxidant

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13
Q

an example of strong oxidant

A

KMnO4-pottasium permanganate
H2CrO4- chromic acid

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14
Q

what do secondary alcohols oxidize to?

A

ketones

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15
Q

why do primary alcohols oxidize twice

A

after the first oxidation, there will be another H bonded to carbon
c[OH][H]—>C[O][H]

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16
Q

why do tertiary alcohols not oxidize?

A

they do not have a hydrogen bonded to the carbon atom attached to OH

17
Q

what is the oxidation number of a pure element?

A

0 eg: cl2

18
Q

what is a reducing agent?

A

a substance which allows another substances to be reduced, by losing its electrons[oxidized]

19
Q

what is a oxidation agent?

A

a substance which allows another substance to be oxidized, by gaining electrons[reduced]

20
Q

what can ketones, aldehydes and carboxylic acids be reduced to?

A

aldehydes- primary alcohol
carboxylic acid-primary alcohol
ketones- secondary alcohol

21
Q

what do alkenes and alkynes get reduced to?

A

alkane

22
Q

what are alkynes?

A

hydrocarbon containing at least one carbon to carbon triple bond