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Question
What are the harmful effects of oxides of sulphur?
Solution
Harmful effects of oxides of sulphur:
(a) It causes headaches, vomiting and even death due to respiratory failure.
(b) It destroys vegetation and weakens building materials/constructions.
(c) It mixes with smoke and fog to form smog, which is very harmful.
It is oxidised by atmospheric oxygen into sulphur trioxide (SO3) which combines with water to form sulphuric acid.
2SO2(g) + O2(g) →2SO3(g)
SO3(g) + H2O(l) → H2SO4(l)
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