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Define the order of reaction. Give one e...

Define the order of reaction. Give one example for fraction order reaction.

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The sum of the powers of the concentration terms of each reactant in the experimentally determined rate equation is called order of reaction.
Example for fractional order reaction is
`H_(2) + Br_(2) rarr 2HBr`
Rate eqn is `r = K[H_(2)]^(1)[Br_(2)]^((1)/(2))`
order = 1+0.5= 1.5
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