Diapositive PPT
E.N : [H2X-] + 2 [HX2-] + 3 [X3-] + [OH-] = [H3O+] + Na+
[ H3X ] = C h3 / K1 K2 K3 L
C h2 / K2 K3 L + 2 C h / K3 L + 3 C/L+ Ke / h = h + 2 C
C [ h2 / K2 K3 L + 2 h / K3 L + 3 /L- 2 ] + Ke / h = h
Ch [ h2 / K2 K3 L + 2 h / K3 L + 3 /L - 2 ] + Ke = h2
h2 - Ch [ h2 / K2 K3 L + 2 h / K3 L + 3 /L - 2 ] - Ke = 0
M = [ h2 / K2 K3 L + 2 h / K3 L + 3 /L - 2 ]