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From the rate expression for the followi...

From the rate expression for the following reactions, determine their order of reaction and the dimensions of the rate constant.
`H_(2) O_(2) (aq) + 3I^(-) (aq) + 2H^(+) to 2H_(2) O (l) + I_(3)^(-), "Rate" = k [ H_(2) O_(2) ][I^(-) ]`

Text Solution

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Rate `= k [H_(2) O_(2) ] [I^(-) ]`
Order of reaction `= 1 + 1 =2`
Dimension of `k = ("Rate")/( [ H_(2) O_(2) ] [I^(-) ] )= ("mol L"^(-1)" s"^(-1) )/( ("mol L"^(-1) )("mol L"^(-1) ) )`
`=" mol"^(-1)" L s"^(-1)`
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