Classifying Alcohols

Question 1

Primary alcohols are alcohols in which the

Answer 1

carbon atom bonded to the -OH group is attached to one other carbon atom (or alkyl group)

Question 1

Secondary alcohols are alcohols in which

Answer 1

the carbon atom bonded to the -OH group is attached to two other carbon atoms (or alkyl groups)

Question 2

Tertiary alcohols are alcohols in which the

Answer 2

carbon atom bonded to the -OH group is attached to three other carbon atoms (or alkyl groups)

Question 3

mildly oxidised with acidified K2Cr2O7(potassium chromate)

what type of alcohols be oxidised

Answer 3

Primary alcohols get mildly oxidised to aldehydes

Secondary alcohols get mildly oxidised to ketones

Question 4

Tertiary alcohols ……… undergo oxidation with acidified K2Cr2O7

Answer 4

do not

Question 5

Primary alcohols get mildly oxidised to

Answer 5

aldehydes

Question 6

Secondary alcohols get mildly oxidised to

Answer 6

ketones

Question 7

Therefore, only the oxidation of primary and secondary alcohols will change the colour of K2Cr2O7 solution as the orange Cr2O72- ions are reduced to

Answer 7

green Cr3+ ions