Answered

All of the following reactions are described as decomposition reactions except
O CuSO4.5H₂O(s) CuSO4(s) + 5H₂O(g).
O 2PbO₂ (s)
2PbO(s) + O₂(g).
O Fe(CO)(I)
Fe(s) + 5CO(g).
O H₂SO3(aq)
SO₂(g) + H₂O(l).
O NO₂(g) + H₂O(l) 4 NO(g) + 2HNO3(aq).

Answer :

The reaction NO₂(g) + H₂O(l) 4 NO(g) + 2HNO3(aq) is not a Decomposition Reaction , Option E is the correct answer.

What is a Decomposition Reaction ?

A reaction in which a substance break down into two or more substances is called a Decomposition Reaction.

In the given question

the reactions

CuSO4.5H₂O(s)--> CuSO4(s) + 5H₂O(g).

2PbO₂ (s) --> 2PbO(s) + O₂(g).

Fe(CO)(I)-->Fe(s) + 5CO(g).

H₂SO3(aq)-- >SO₂(g) + H₂O(l)

These are all Decomposition Reaction.

The only reaction which is not is the Reaction E

NO₂(g) + H₂O(l) 4 NO(g) + 2HNO3(aq)

To know more about Decomposition Reaction

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