NEET Class neet Answered
Equivalent weight is
Asked by Mrinal | 20 May, 2019, 10:07: PM
Expert Answer
Option (3) is correct.
Given:
Molecular weight of Na2S2O3 = M
The reaction is,
Na2S2O3 + H2O + Cl2 →Na2SO4 + 2HCl + S
The change in oxidation number for,
Na2S2O3 → Na2SO4 is
+2 → +6 = 4
For , Na2S2O3 → S
+2 → 0 = 2
We know,
Equivalent weight is,
The equivalent weight of Na2S2O3 is 
.
.
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