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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

Verified by Experts

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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