While performing an experiment a student observes that when he heats s

1.	While performing an experiment a student observes that when he heats some green crystals in a boiling tube, the colour of the crystals changes to brown and a gas evolves which smells like burning sulphur. Interpret the observation and results.
Answer» Observation: The green colour of ferrous sulphate crystals changes to brownish black ferric oxide and smell of burning sulphur is observed. Result: Heating of ferrous sulphate is a thermal decomposition reaction because of ferrous sulphate breaks down into simpler compounds-Fe₂O₃, SO₂ and SO₃. 2FeSO₄(s) +Heat → Fe₂O₃(s) + SO₂(g) + SO₃(g)

While performing an experiment a student observes that when he heats some green crystals in a boiling tube, the colour of the crystals changes to brown and a gas evolves which smells like burning sulphur. Interpret the observation and results.

Answer»

Observation: The green colour of ferrous sulphate crystals changes to brownish black ferric oxide and smell of burning sulphur is observed.

Result: Heating of ferrous sulphate is a thermal decomposition reaction because of ferrous sulphate breaks down into simpler compounds-Fe₂O₃, SO₂ and SO₃.

2FeSO₄(s) +Heat → Fe₂O₃(s) + SO₂(g) + SO₃(g)

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While performing an experiment a student observes that when he heats some green crystals in a boiling tube, the colour of the crystals changes to brown and a gas evolves which smells like burning sulphur. Interpret the observation and results.

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