Feb mocks

Question 1

Alcohol starting formula

Answer 1

Methanol - CH3OH

Question 2

What does a number in betwen the alcohol mean eg Propan-1-ol

Answer 2

Where the OH group is located in the molecule

Question 3

Hydration of Ethene - conditions, pros and cons

Answer 3

300 degrees
65 atm
Pros:
Produces pure ethanol
Runs continuously
Cons:
Energy intensive
Uses non-renewables

Question 4

Fermentation of glucose pros and cons

Answer 4

30 degrees
Pros
renewable raw materical used (sugar cane)
Less energy intensive
Cons
Produces impure ethanol
Can be made in batches

Question 5

Chemical oxidation of ethanol catalysts and colour change

Answer 5

Potassium Dichromate 6
Dilute sulphuric acid
Orange to green

Question 6

Carboxylic Acids starting formula

Answer 6

HCOOH

Question 7

Carboxylic Acids + alcohols rule

Answer 7

c+1 h+2 from no 1

Question 8

How to make soluble salts (2 methods)

Answer 8

1. HEat acid, add base in excess, filter excess base.

Question 9

3 methods of Ethanol oxidisation

Answer 9

Combusion (complete)
Microbial
Chemical
(2 catalysts)

Question 10

Alkene formula

Answer 10

CnH2n

Question 11

Alkane formula

Answer 11

CnH2n+2

Question 12

ethane vs ethene reaction differences with bromine

Answer 12

Ethane:
Needs UV light
produces bromoethane
substitution
Ethene:
Adition
Produces dibromoethene

Question 13

Reversible reaction

Answer 13

reverse reactions are taking place at same rate
while the concentrations of reactants and products remains constant

Question 14

ammonium ion test

Answer 14

add NaOH
damp blue litmus paper turns red

Question 15

chlorine gas test

Answer 15

damp blue litmus paper turns white