Which gas is present in the largest proportion in the exhaust fumes of a car engine?
Oxides of nitrogen are released into the atmosphere in car engine exhaust fumes.
Which environmental problem below is not made worse by these exhaust fumes?
the hole in the ozone layer
the corrosion of buildings
Which of the following is true?
Acid rain is caused by carbonic acid
Acid rain turns universal indicator red
Wet acid deposition includes snow and fog
Catalytic converters remove oxides of sulfur from car exhausts
What is the colour of universal indicator paper in rain water?
A sample of acid rain water is tested and found to be pH 4. How does its hydrogen ion concentration compare to pure water?
1000 times more concentrated
3 times more concentrated
1000 times less concentrated
3 times less concentrated
What happens to the oxidation state of sulfur when it becomes sulfuric acid in acid rain?
One equation for the formation of acid rain from nitrogen dioxide is shown below.
2NO2 (g) + H2O (l) → HNO2 (aq) + HNO3 (aq)
What type of reaction is this?
Which of the following are used in catalytic converters?
- Ceramic
- Palladium
- Platinum
A sample of rainwater is tested and found to be pH 6. Which of the following is not true?
The rainwater is acid rain
Blue litmus would turn red in the sample
Iron structures can be damaged by dry deposition such as the equation below:
Fe (s) + SO2 (g) + O2 (g) → FeSO4 (s)
Which is true?
- Iron is oxidised
- Sulfur is oxidised
- This is a neutralisation reaction
