Question

1. Name the gas or gases evolved during decomposition reaction?
2FeSO⁴(s)Heat-------> ​

Answer 1

Fe2O3 +SO2+SO3

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Answer 2

Sulphur dioxide (SO₂) and Sulphur trioxide (SO₃) gases are evolved during the decomposition reaction of Ferrous sulphate.

• Due to heat application, a complex chemical compound break downs into (two or more)comparatively simpler substances. This reaction is known as decomposition reaction.
• This decomposition reaction can be also observed when we apply heat to ferrous sulphate.
• Chemical reaction :

2FeSO₄ (s) ---Heat----> Fe₂O₃ (s) + SO₂ (g) + SO₃ (g)

• Among the three products of the above mentioned chemical reaction, only two of them are gases. (ie. SO₂ or Sulphur dioxide , SO₃ or trioxide).