1.

Which of the following expression is correct for the rate of reaction given below ? `5Br^(-)(aq) + BrO_(3)^(-)(aq) + 6H^(+) (aq) to 3Br_(2) (aq) + 3H_(2) O(l)` .A. `(Delta[Br^(-)])/(Delta t) = 5 (Delta[H^(+)])/(Delta)`B. `(Delta[Br^(-)])/(Delta t) = (6)/(5) (Delta[H^(+)])/(Delta t)`C. `(Delta[Br^(-)])/(Delta t) = (5)/(6) (Delta [H^(+)])/(Delta t)`D. `(Delta[Br^(-)])/(Delta t) = 6 (Delta[H^(+)])/(Delta t)`

Answer» Correct Answer - C
For the reaction,
`5Br_((aq))^(-) + BrO_(3(aq))^(-) + 6H_((aq))^(+) to 3Br_(2(aq)) + 3H_(2)O_((l))`
Rate `= (-1 Delta)/(5) ([Br^(-)])/(Delta t) = - (Delta[BrO_(3)^(-)])/(Delta t) = (-1)/(6) (Delta[H^(+)])/(Delta t)`
`:. (Delta [Br^(-)])/(Delta t) = (5)/(6) (Delta[H^(+)])/(Delta t)`


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