JEE Mains · Chemistry · STD 11 - 7. Redox reactions
In order to oxidize a mixture of one mole of each of \(Fe{C_2}{O_4},F{e_2}\,{\left( {{C_2}{O_4}} \right)_3},FeS{O_4}\) and \(F{e_2}{\left( {S{O_4}} \right)_3}\) in acidic medium, the number of moles of \(KMnO_4\) required is
- A \(1\)
- B \(1.5\)
- C \(2\)
- D \(3\)
Answer & Solution
Correct Answer
(C) \(2\)
Step-by-step Solution
Detailed explanation
\(n-\) factors of \(KMnO_4=5,\,n-\) factor of \(FeSO_4=1\) \(n-\) factors of \(FeC_2O_4=3,\,Fe_2(SO_4)_3\) does not react \(n-\) factors of \(Fe_2(C_2O_4)_3=6\), \(n_{eq}\,KMnO_4=n_{eq}[FeC_2O_4+Fe_2(C_2O_4)_3+FeSO_4]\) or, \(x \times 5=1 \times 3+1\times 6+1\times1 \) \(x=2\)
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