Identify the oxidant and the reductant in the following reaction respectively: 2KMnO4+10KCl+8H2SO4→2MnSO4+6K2SO4+8H2O+5Cl2
A
KMnO4&KCl
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B
KMnO4&H2SO4
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C
MnSO4&KMnO4
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D
KCl&KMnO4
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Solution
The correct option is AKMnO4&KCl The given redox reaction is (+7)2KMnO4+(−1)10KCl+8H2SO4→(+2)2MnSO4+6K2SO4+8H2O+(0)Cl2. Reduction half reaction A species which gains electron in a redox reaction is called as oxidising agent/oxidant. (+7)2KMnO4(oxidant)→(+2)2MnSO4. Here KMnO4 is gaining electron so it is an oxidant.
Oxidation half reaction A species which looses electron in a redox reaction is called as reducing agent/reductant. (−1)10KCl(reductant)→(0)5Cl2. Here KCl is losing reagent so it is a reductant.