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30/10/2020 5:09 pm
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What happens when ferrous sulphate crystals are heated?
(a) A gas having the smell of burning sulphur is evolved
(b) No gas is evolved
(c) Brown coloured gas is evolved
(d) Colourless and odourless gas is evolved
1 Answer
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30/10/2020 5:11 pm
(a) A gas having the smell of burning sulphur is evolved
Explanation:
The green colour of ferrous sulphate crystals changes to brownish black ferric oxide and smell of burning sulphur is evolved due to SO2 and SO3.
2FeSO4(s) + ▵ → Fe2O3(s) + SO2(g) + SO3(g)