Chapter 15 - Haloalkanes

Question 1

state 2 sources of nitrogen oxides in the stratosphere

Answer 1

-lightning
-aircraft

Question 2

state 2 ways that the use of catalysts helps chemical companies…

Answer 2

using a catalyst means that…
- lower pressures can be used
- lower temps can be used
- lower energy demand
- therefore reduces CO2 emissions
- atom economy increases
- therefore reduces waste/ toxic reactants

Question 3

equation of nitrogen monoxide catalysing the breakdown of ozone

Answer 3

NO + O3 ——> NO2 + O2
NO2 + O ——> NO + O2

Question 4

3 uses of CFC’s

Answer 4

• refrigerants
• air conditioning units
• propellants