HL Paper 3
Nitrogen dioxide and sulfur dioxide are two air pollutants.
Both of these air pollutants also contribute to acid deposition. Outline mechanisms for the formation of \({\text{HN}}{{\text{O}}_{\text{3}}}\) and \({\text{S}}{{\text{O}}_{\text{3}}}\).
Acid deposition is a consequence of industrial processes.
State what is meant by the term acid deposition.
Describe, using equations, the mechanism of acid deposition caused by the oxides of nitrogen, including their initial formation.
All shellfish have a calcium carbonate shell. Discuss, including a balanced equation, the long-term effect of acid deposition on these organisms.
Balanced equation:
The concentration of some pollutants in a city was measured over a 24 hour period. The results are shown below.
Outline the cause of the increase in NO levels between 5 and 8 am.
EDTA is produced by reacting ethane-1,2-diamine with chloroethanoic acid, ClCH2COOH.
Identify the other product formed.
Explain why EDTA, a chelating agent, is more effective in removing heavy metal ions from solution than monodentate ligands.