InterviewSolution
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InterviewSolution
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The reduction of peroxydisulphate ion by `I^(-)` ion is expressed by `S_(2)O_(8)^(2-) + 3 I^(-) rarr 2SO_(4)^(2-) + I_(3)^(-)` If rate of disappearance of `I^(-)` is `9//2xx10^(-3)` mol `L^(-1) S^(-1)`, what is the rate of formation of `SO_(4)^(2-)` during same time ?A. `10^(-3) "mol"//L^(-1)s^(-1)`B. `2 xx 10^(-3) "mol"//L^(-1)s^(-1)`C. `3 xx 10^(-3) "mol"//L^(-1)s^(-1)`D. `4 xx 10^(-3) "mol"//L^(-1)s^(-1)` |
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Answer» Correct Answer - C `(1)/(2)(d[SO_(4)^(2-)])/(d t) = (1)/(3) (-(d[I^(-)])/(d t))` `(1)/(2) xx (d[SO_(4)^(2-)])/(d t) = (1)/(3) xx (9)/(2)` `:. (d[SO_(4)^(2-)])/(d t) = 3 mol L^(-1)s^(-1)`. |
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