Fara mari calcule... de retinut cand avem titrare intre un acid monobazic si o baza monoacida , reactia se propduce la echivalenta adica volum la volum...
Rezolvarea de mai jos demonstreaza afirmatia de mai sus....:
Cn = md/EgxVs
Eg.HCl = M.HCl/nr.H+ = 36,5/1 = 36,5 g
Eg.NaOH = M.NaOH/nr. HO- = 40/1 = 40 g
md.HCl = Eg.HClxVsxCn = 36,5x0,028x3 = 3,066 g HCl
3,066g md g
HCl + NaOH --> NaCl + H2O
36,5 40
=> md.NaOH = 3,066x40/36,5 = 3,36 g NaOH
=> Vs = md/CnxEg = 3,36/3x40 = 0,028 L = 28 mL
