Green Chemistry

Question 1

Chemical industries and sustainability

Answer 1

Use of renewable raw materials
Use of renewable energy sources
Ensure all chemicals are non-toxic
Biodegradable or recyclable 
High atom economy 

However:
Food can be more expensive
Soil degradation could occur

Question 2

The greenhouse effect

Answer 2

IR is absorbed by c=o, o-H and c-h bonds as molecules vibrate and emit energy

The process is which the absorption and subsequent emission of IR by atmospheric gasses warms the lower atmosphere and plants surface

Question 3

Solutions

Answer 3

Alternative fuels
Carbon capture:
Carbonate storage:
CaCO3
MgCO3

Question 4

The ozone layer

Answer 4

Continuously being broken down in the stratosphere by UV
A - 5%
B - 95%
C - 100%

Formation of the ozone:

Ozone depletion:

Question 5

Controlling air pollution

Answer 5

CO - prevents oxygen binding to haemoglobin
NOx - formation of low level ozone, acid rain,
Unburnt hydrocarbons - form low level ozone,forms radicals,health issues

Catalytic converter:
Oxidation Catalysts decrease the emissions of CO2
2CO + O2 ➡️ 2CO2
C12H26 + 18.5 O2 ➡️ 10CO2 + 13H2O

Three way catalyst
2NO + 2CO ➡️ N2 + 2CO2

Molecules diffuse over metal and are absorbed
Temp. bonds are held between molecules and surface
Reaction occurs
Products are deabsorbed

Question 6

CO2

Answer 6

Ethanol
CFC's
Solvents
Coffee
Beer
Dry cleaning
Toxic waste treatment
Chemical synthesis