The equivalent mass of Na2S2O3 as reductant in the reaction, Na2S2O3+5H2O+4Cl2⟶2NaHSO4+8HCl, is :
A
MolarMass1
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B
MolarMass2
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C
MolarMass6
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D
MolarMass8
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Solution
The correct option is DMolarMass8 Na2S2O3+5H2O+4Cl2⟶2NaHSO4+8HCl +2 +6 For each S, oxidation state changes by 4. So, total change for 2 S atoms is 8. So, its equivalent weight is M8.