SC20e Combustible Fuels and Pollution

Question 1

how is sulfur dioxide produced?

Answer 1

through sulfur impurities in fossil fuels which burn when the fuels burn

Question 2

sulfur + oxygen →

Answer 2

sufur dioxide

Question 3

how is acid rain made?

Answer 3

sulfur dioxide dissolves in water in clouds forming a mixture of acids including sulphurous acid
this acid is oxidised with oxygen from the air forming sulfuric acid

Question 4

equations linked with the formation of acid rain?

Answer 4

sulfur dioxide + water→ sulphurous acid
SO₂ + H₂O → H₂SO₃
sulphurous acid + oxygen → sulfuric acid
2H₂SO₃ + O₂ → 2H₂SO₄

Question 5

acid rain?

Answer 5

rain water that is more acidic than usual due to air pollution

Question 6

effects of acid rain?

Answer 6

~kills trees
~kills fish
~weathers limestone
~corrodes metals

Question 7

nitrogen oxides

Answer 7

~causes acid rain
~NO2 forms dilute nitric acid when it dissolves in the water in the clouds. It is a red-brown toxic gas that can cause respiratory diseases like Bronchitis.​

Question 8

what do catalytic converters do to NOx?

Answer 8

turn nitrogen oxides into nitrogen to form a harmful photochemical smog

Question 9

what does photochemical smog cause?

Answer 9

triggers asthma, causes lung and heart diseases