Alcohols

Question 1

Oxidation of alcohols: oxidising agent

Answer 1

K2Cr2O7 + acid

Question 2

Oxidation of alcohols to only get an aldehyde

Answer 2

Distilling off product: collect in a condensing tube dripping down to remove it from the oxidising agent and to collect it in another beaker

Question 3

Oxidation of alcohols to only get a carboxylic acid

Answer 3

Heat under reflux: have condensing tube dripping vertically so the aldehyde drips back down into the flask and is oxidised into a carboxylic acid (2nd oxidation)

Question 4

Fehlings test result with an aldehyde

Answer 4

Blue solution turns to brick red ppt

Question 5

Fehlings test result with a ketone

Answer 5

Blue solution does not change

Question 6

Tollens test result with an aldehyde

Answer 6

Silver mirror formed

Question 7

Tollens test result with a ketone

Answer 7

No change

Question 8

What must be added to the Tollens reagent?

Answer 8

Ammonia (alkaline solution)

Question 9

What catalyst is used in the dehydration of alcohols

Answer 9

Conc. H2SO4

Question 10

What product is formed in the dehydration of alcohols?

Answer 10

Alleged