Nitrogen and Sulfur
188 questions· page 1 of 19
Four atmospheric pollutants are listed.
1 nitrogen oxides
2 carbon monoxide
3 unburnt hydrocarbons
4 sulfur dioxide
Which pair of pollutants react to form peroxyacetyl nitrate, PAN?
Options
A 1 and 3
B 1 and 4
C 2 and 3
D 2 and 4
Gas M is produced when is heated with .
Which row is correct?
Options
| type of reaction | identity of M | |
|---|---|---|
| A | acid–base | |
| B | redox | |
| C | acid–base | |
| D | redox |
Which reduction process occurs on the surface of a catalytic converter?
Options
A reduction of carbon dioxide and nitrogen oxides
B reduction of carbon dioxide only
C reduction of nitrogen oxides only
D reduction of carbon monoxide
Sulfur dioxide in the atmosphere can form acid rain. This occurs in two steps.
1 oxidation of to
2 formation of dilute
Which row identifies the atmospheric catalyst for step 1 and the reagent for step 2?
Options
| catalyst | reagent | |
|---|---|---|
| A | ||
| B | ||
| C | ||
| D |
The flow chart shows some reactions of nitrogen compounds.
Which row identifies gas 1 and salt 2?
Options
| gas 1 | salt 2 | |
|---|---|---|
| A | ammonia | ammonium nitrate |
| B | ammonia | sodium nitrate |
| C | nitrogen dioxide | ammonium nitrate |
| D | nitrogen dioxide | sodium nitrate |
Which dot-and-cross diagrams represent molecules that can react with unburned hydrocarbons to form peroxyacetyl nitrate, PAN, a component of photochemical smog?
Options
A 1 and 3
B 1 and 4
C 2 and 3
D 2 and 4
Compound L has empirical formula NH. It decomposes on gentle heating to produce ammonia and compound M only. An aqueous solution of compound L is a good conductor of electricity.
Which row could be correct?
Options
| identity of M | species present in L(aq) | |
|---|---|---|
| A | N₂H₄ | N₃⁻ and H⁺ |
| B | N₂H₄ | NH₄⁺ and NH₂⁻ |
| C | HN₃ | NH₃ and HN₃ |
| D | HN₃ | NH₄⁺ and N₃⁻ |
Which statement about an ammonium ion is correct?
Options
A All of the H–N–H bond angles in the ion are 90°.
B All of the H–N–H bond angles in the ion are 107°.
C The ion contains a N–H dative covalent bond which is weaker than the other three N–H covalent bonds.
D The ion will react with a base as it is a weak acid.
Which statement is correct?
Options
A Nitrogen is unreactive due to the absence of lone pairs in the molecule.
B Aqueous ammonia contains both and . The ion is a Brønsted–Lowry acid.
C High temperatures are needed to supply the energy to break the strong double bonds in nitrogen molecules when they react.
D Atmospheric reacts with unburnt hydrocarbons to form a component of photochemical smog.
The fumes from the exhausts of petrol-burning cars contain the following pollutants.
- unburnt hydrocarbons
- nitrogen dioxide
- carbon monoxide
Which pollutants are removed by oxidation in a catalytic converter?
Options
A 1, 2 and 3
B 1 and 2 only
C 1 and 3 only
D 2 and 3 only