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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^(+)])/(Deltar)=(+1)/(3)(Delta[Br_(2)])/(Deltat)`
`implies(Delta[Br^(-)])/(Deltat)=-(Delta[BrO_(3)^(-)])/(Deltat)=(-5)/(6)(Delta[H^(+)])/(Deltat)`
`implies(Delta[Br^(-)])/(Deltat)=(5)/(6)(Delta[H^(+)])/(Deltat)`
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