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Write a Condition Under Which a Bimolecular Reaction is Kinetically First Order. Give an Example of Such a Reaction. (Given : Log2 = 0.3010,Log 3 = 0.4771, Log5 = 0.6990). - Chemistry

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Question

 Write a condition under which a bimolecular reaction is kinetically first order. Give an example of  such a reaction. (Given : log2 = 0.3010,log 3 = 0.4771, log5 = 0.6990).

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Solution

\[\ce{ C_12 H22O11 + H2O ->[H+] C6 + \underset{Glucose}{C6H12O6} + \underset{Fructose}{C6H12O6} }\]    Rate=K[C12H22O4]
Biomolecular reaction is Kinetically first order. Consider a chemical reaction between two substances when one reactanct is present in large excess.

`CH_3 COOC_2H5 +H_2O -> CH_3OOH + C_2H_5OH`

t=0   0.01mol         10mol             0                         0           
t            0mol          9.9mol         0.01                0.01 mol  
Rate = K[CH3COOC2H5]
`Rate = K[CH_3COOC_2H_5] where K=K' [H2O]`  the reaction behaves as first order reactions. 

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2018-2019 (March) 56/3/2

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