For a redox reaction, FeS2 + KMnO4 → Fe2O3 + S8 + Mn+2 if 1 mole of S8 is produced then calculate moles of KMnO4 consumed : (1) 1 mole (2) 8/5 mole (3) 16/5 mole (4) 12/5 mole

Hi Students..To work out this question, one needs to take into account the role of n factor for the reaction.For this reaction, the equivalents of S8 so produced will be equal to the equivalents of KMnO4.Applying the equation. nXnf (for KMnO4) = nXnf (S8)5Xx = 1X8x= 8/5Answer is (b)

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Grade 12Physical Chemistry

For a redox reaction, FeS₂ + KMnO₄ → Fe₂O₃ + S₈ + Mn⁺² if 1 mole of S₈ is produced then calculate moles of KMnO₄ consumed :

(1) 1 mole

(2) 8/5 mole

(3) 16/5 mole

(4) 12/5 mole

anto frederick

11 Years agoGrade 12

1 Answer

Sakshi

11 Years ago

Hi Students..
To work out this question, one needs to take into account the role of n factor for the reaction.
For this reaction, the equivalents of S₈ so produced will be equal to the equivalents of KMnO4.
Applying the equation. nXnf (for KMnO4) = nXnf (S₈)

5Xx = 1X8
x= 8/5

Answer is (b)