لخّصلي

As the hydrolysis proceeds, there will be proportional proport increase in the concentration of acetic acid formed,

b. The hydrolysis of an ester such as ethyl acetate illustrates a himolecular reaction that gives sodium acetate and ethanol as the product from which second.order rate constant can be calculated

CH3COOCH+NaOH->CH COONa+CHOH

present in it direct or indirect titration with a standard solution of an acid.A

B Products

2.303 - logb(a-x) xloga(b-x)

If 'b' moles of ester and 'a' moles of NaOH are taken initially, then

a'a Vo (the volume of acid equivalent to the amount of NaOH present initially)

Ca x) a Vr(the volume of acid equivalent to the

amount of NaOH present at time, 1)

As the hydrolysis proceeds, there will be proportional proport increase in the concentration of acetic acid formed,

b. The hydrolysis of an ester such as ethyl acetate illustrates a himolecular reaction that gives sodium acetate and ethanol as the product from which second. order rate constant can be calculated

CH3COOCH+NaOH→CH COONa+CHOH

present in it direct or indirect titration with a standard solution of an acid. The hydrolysis of ester in presence of alkaliis second order being first order with respect to both ester and NaOH The second order reaction can be established by the consistency of the values of rate constant (k) determined by substituting the titration results at different time intervals in the second order rate equation as follows:

3

1x (VO-V) Vo. Ve

Where Vo volume of the acid equivalent to the alkali present at initial stage of experiment Vt volume of the acid equivalent to the alkali present

at any selected time interval Obviously, Vt is proportional to (ax) and Vois proportional to 'a' in the original rate equation for the second order reaction of type I

1 ta(a-x)

4If we start with different concentrations of the reactants, the second order rate equation type II should be used for establishing the reaction to be of second order.

A

B Products

2.303 - logb(a-x) xloga(b-x)

If 'b' moles of ester and 'a' moles of NaOH are taken initially, then

a'a Vo (the volume of acid equivalent to the amount of NaOH present initially)

Ca x) a Vr(the volume of acid equivalent to the

amount of NaOH present at time, 1)