Q.

In the following reaction (unbalanced), equivalent weight of As2S3 is related to molecular weight M byAs2S3+H++NO3−⟶NO+H2O+AsO43−+SO42−

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a

M2

b

M4

c

M28

d

M24

answer is C.

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Detailed Solution

As2S3⟶AsO43−+3SO42− O.N. 2As=+62×53×63s=−6=10=18Net = -Total = 28 Net change = 28Thus, equivalent mass of As2O3=M28
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In the following reaction (unbalanced), equivalent weight of As2S3 is related to molecular weight M byAs2S3+H++NO3−⟶NO+H2O+AsO43−+SO42−