Consider the reaction represented by the following equation: xKMnO 4(aq) + ySO2(g) + zH2O(I) → K 2SO4(AQ) + 2MnSO4(aq) + 2H2SO x,y and z are respectively
a
2,5 and 2
b
2,2 and 5
c
5, 1 and 2
d
1, 5 and 2
Explanation
Correct Option
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firekunmii15
3 months ago
To balance the reaction:
KMnO₄ + SO₂ + H₂O → K₂SO₄ + MnSO₄ + H₂SO₄
This is a redox reaction. Potassium permanganate (KMnO₄) acts as an oxidizing agent, while sulphur dioxide (SO₂) acts as a reducing agent.
In acidic medium:
Manganese (Mn) in KMnO₄ changes from +7 to +2 (it is reduced).
Sulphur (S) in SO₂ changes from +4 to +6 (it is oxidized).
After balancing the equation properly, we obtain:
2KMnO₄ + 5SO₂ + 2H₂O → K₂SO₄ + 2MnSO₄ + 2H₂SO₄
From the balanced equation:
x = 2
y = 5
z = 2
Therefore, the correct values of x, y, and z are 2, 5, and 2 respectively.


