The homogeneous reversible reaction, $C(2)H(5)OH+COOHhArrCH(3)COOC(2)H(5)+H(2)O$ is studied at various initial concentrations of the reactants at constant temperature. Calculate $K$ in each case.
${:(," of acid", " of alcohol","***** of ester"),(,"Per litre (initial)","Per litre(initial)","Per litre at equilibrium"),((i),1,1,0.637),((ii),1,4,0.93):}$