Reagents

Question 1

What are the essential conditions for free radical substitution

Answer 1

UV light

Question 2

What are the essential conditions for nucleophilic substitution of haloalkanes

Answer 2

Warm aqueous NaOH (or KOH)

Question 3

What conditions are needed for addition Polymerisation of alkenes

Answer 3

High temp
High pressure
Initiator/catalyst

Question 4

What 2 conditions are needed for a hydrogenation reaction of alkene - breaks double bond (electrophilic addition)

Answer 4

150*c

Nickel catalyst

Question 5

What happens in hydration of alkenes

Answer 5

H2O is added across double bond

Alkene -> alcohol

Question 6

What happens in electrophilic addition

Answer 6

Alkene -> alkane 
Hydrogen added (H2, HBr)

Question 7

4 conditions needed for hydration of alkenes

Answer 7

High pressure (60-70atm)
300*c
H3PO4 catalyst (phosphoric acid catalyst)
Steam

Question 8

What’s test for alkenes

Answer 8

Bromine water goes from orange -> colourless if positive

Question 9

What is used in simple oxidation reactions of alcohols as an oxidant agent

Answer 9

Acidified potassium dichromate (VI) K2CrO7
Or
H2SO4

Question 10

If the K2Cr7O7 oxidises something what would the colour change be

Answer 10

Orange -> green

Oxidation must have occurred

Question 11

What does a 1y alcohol oxidise to

Answer 11

Aldehyde -> Carboxylic acid

-CHO -COOH

Question 12

What does a 2y alcohol oxidise to

Answer 12

Ketone C=O

Question 13

What conditions are used for elimination of alcohols back to alkenes (dehydration)

Answer 13

Hot concentrated sulphuric/phosphoric acids