RCOOH + HO-R <==> RCOO-R + H2O
initial 3 moli 4 moli 0 0
cons./format -x -x +x +x
echilibru 3-x 4-x x x
=> x = 1,5 moli
=> la echilibru avem conc.:
[RCOOH] = 3-1,5 = 1,5 mol/L
[ROH] = 4-1,5 = 2,5 mol/L
[RCOO-R] = x = 1,5 mol/L
[H2O] = x = 1,5 mol/L
stim ca
Kc = [H2O]*[RCOO-R]/[RCOOH]*[ROH]
= 1,5*1,5/1,5*2,5 = 0,6