(i) What type of reaction is burning of magnesium with oxygen?
(ii) Name the product formed when ferrous sulphaye is heated.
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1. Exothermic. Like some other exothermic reactions, it has a high activation energy.
2. On heating, ferrous sulphate crystals lose water and anhydrous ferrous sulphate(FeSO4) is formed. So their colour changes from light green to white. On further heating, anhydrous ferrous sulphate decomposes to form ferric oxide (Fe2O3), sulphur dioxide (SO2) and sulphur trioxide (SO3).
2. On heating, ferrous sulphate crystals lose water and anhydrous ferrous sulphate(FeSO4) is formed. So their colour changes from light green to white. On further heating, anhydrous ferrous sulphate decomposes to form ferric oxide (Fe2O3), sulphur dioxide (SO2) and sulphur trioxide (SO3).
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The green coloured crystals of ferrous sulphate changes to brownish black ferric oxide with evolution of sulphur dioxide and sulphur trioxide giving smell of burning sulphur.
It is a decomposition reaction as single reactant breaks down into many products.
The burning of magnesium with oxygen is Exothermic Reaction.
It is a decomposition reaction as single reactant breaks down into many products.
The burning of magnesium with oxygen is Exothermic Reaction.
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