alcohols

Question 1

what are the conditions for oxidation reactions of alcohol?

Answer 1

conditions -
- potassium dichromate (V1) K2Cr2O7
- dilute sulfuric acid (H2SO4)
- heat

Question 2

What are the products and conditions when primary alochols are oxidised?

Answer 2

1) alcohol -> aldehyde + H20
conditions - heat + distil, K2Cr2O7 w dilute H2SO4
2) further oxidised to a carboxylic acid
K2Cr2O7 in excess
orange solution -> green solution.

Question 3

Oxidation of secondary alcohols.
- conditions
- products

Answer 3

alcohol -> ketone +water
orange solution - green solution
-dilute sulfuric acid and heat and K2Cr2O7

Question 4

what happens to tertiary alcohols?

Answer 4

are not oxidised so remain orange solution

Question 5

elimination reaction/ dehydration.
- conditions
- products

Answer 5

alcohol -> alkene + water
condition - heat under reflux 170 degrees
- concentrated sulfuric acid or phosphoric acid.

Question 6

nucleophilic substitution reaction of alcohols using hydrogen halide
- product

Answer 6

alcohols + HBr - haloalkane and water

Question 7

making hydrogen halide in situ

Answer 7

H2SO4 + Nabr -> Hbr + NaHSO4
CH3CH2OH + HBr -> CH3CH2Br +H20