1.

X gram of pure As_2S_3 is completely oxidised to respective highest oxidation states by 50 ml of 0.1 M hot acidified KMnO_4 then X, mass of As_2S_3 taken is : (Molar mass of As_2S_3=246)

Answer»

22.4 G
0.22 g
64.23 g
None

Solution :`5As_2S_3+28KMnO_4+H^(+)to10H_3AsO_4+28Mn^(2+)+SO_4^(2-)`
MEQ of `As_2S_3`=meq. of `KMnO_4`
`X/246xx1000xx28=50xx0.1xx5 " " X=0.22 g`


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