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Which of the following expression is co...

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^(-)])/(Deltat)= 5(Delta[H^(+)])/(Deltat)`

B

`(Delta[Br^(-)])/(Deltat)= (6)/(5)(Delta[H^(+)])/(Deltat)`

C

`(Delta[Br^(-)])/(Deltat)= (5)/(6)(Delta[H^(+)])/(Deltat)`

D

`(Delta[Br^(-)])/(Deltat)= 6(Delta[H^(+)])/(Deltat)`

Text Solution

Verified by Experts

The correct Answer is:
C
Given, chemical reaction is
`5Br^(-) (aq) + BrO_(3)^(-) (aq) + 6H^(+) (aq) to 3Br_(2)(aq) +3H_(2)O(l)`
Rate law expression for the above equation can be written as
`-(1)/(5)(Delta[Br^(-)])/(Deltat) = -(Delta[BrO_(3)^(-)])/(Deltat) = (-1)/(6)(Delta[H^(+)])/(Deltat) = (+1)/(3)(Delta[Br_(2)])/(Deltat)`
`rArr" "(Delta[Br^(-)])/(Deltat)= -(Delta[BrO_(3)^(-)])/(Deltat) =(Delta[H^(+)])/(Deltat)`
`rArr" "(Delta[Br^(-)])/(Deltat) = (5)/(6) (Delta[H^(+)])/(Deltat)`
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