Miscellaneous

Question 1

State major sources of nitrogen oxides in the atmosphere, explaining how they are formed.

Answer 1

1. Car exhausts
2. Aeroplanes
3. Lightening
4. Power stations
5. Burning of fossil fuels.

Question 2

Describe the chemical role of Nitrogen oxides in the formation of acid rain.

Answer 2

1. NO2 + SO2 -> NO +SO3
2. NO + 1/2O2 -> NO2
3. SO3 + H2O -> H2SO4
4. 4NO2 + 2H2O + O2 -> 4HNO3

Question 3

What is Bond energy?

Answer 3

It is the energy when 1 mol of bonds is broken in the gas phase.