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During thhe preparation of `H_(2)S_(2)O_(8)` (per disulphuric acid) `O_(2)` gas also releases at anode as byproduct. When 9.72 of `H_(2)` releases at cathode and `2.35`L `O_(2)` at anode at STP, the weight of `H_(2)S_(2)O_(8)` produced in gram is
A. 87.12
B. 43.56
C. 83.42
D. 51.74

1 Answer

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Best answer
Correct Answer - B
`(9.72)/(22.4)xx2=(2.35)/(22.4)xx4+(W)/(194)xx2` or `W=43.47g`

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