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For the hydrolysis of methyl acetate in ...

For the hydrolysis of methyl acetate in aqueous solution, the following results were obtained :
`{:(t//s,0,30,60),([CH_(3)COOH]//mol.L^(-1),0.60,0.30,0.15):}`
Show that it follows pseudo first order reaction, as the concentration of water remains constant.

Text Solution

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If the reaction follows pseudo first order kinetics, then the equation relating reactant concentration (C) to time (t) will be the same as that for a first order reaction.
That is, `t=(2.303)/(k)log.([A]_(0))/([A])`
It is given that `[A]_(0)=0.60"mol.L"^(-1)`
At `t=30s,k=(2.303)/(30)log.(0.60)/(0.30) =0.0231s`
and at `t=60s,k=(2.303)/(60)log.(0.60)/(0.15) =0.0231s`
Thus, we get a constant value of k , indicating the reaction follows pseudo first order kinetics.
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