This can also be deduced from the equilibrium constant expression for the reaction: K = { CH 3 CO 2 − } { H 3 O + } { CH 3 CO 2 H } {\displaystyle K={\frac {\{{\ce {CH3CO2-}}\}\{{\ce {H3O+}}\}}{{\ce {\{CH3CO2H\}}}}}} If {H3O+} increases {CH3CO2H} must increase and CH 3CO− 2 must decrease.
Hal ini juga dapat disimpulkan dari ekspresi konstanta kesetimbangan untuk reaksi: K = { CH 3 CO 2 − } { H 3 O + } { CH 3 CO 2 H } {\displaystyle K={\frac {{\ce {\{CH3CO2^-\}\{H3O+\}}}}{{\ce {\{CH3CO2H\}}}}}} Jika {H3O+} bertambah {CH3CO2H} harus bertambah dan CH3CO−2 harus berkurang.