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समावयवी अभिक्रिया (isomerisation reaction) `ArarrB` का वेग नियतांक `4.5xx10^(-3)" मिनट"^(1)` है यदि A की प्रारम्भिक सान्द्रता 1M हो, तो 1 घण्टे बाद अभिक्रिया के वेग की गणना कीजिये

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`ArarrB`
`K=4.5xx10^(-3)" मिनट"^(1)` , a=1 M, t= 60 मिनट, (a-x)=m
`therefore" "K=(2.303)/tlog""a/((a-x))` से
`4.5xx10^(-3)=(2.303)/60log""1/mrArrm=(a-x)=0.7634`
`therefore` 60 मिनट बाद वेग `=Kxx(a-x)=4.5xx10^(-3)xx0.7634`
`=3.4354xx10^(-3)" मोल लीटर"^(-1)" सेकण्ड"^(-1)`

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