in reactia de neutralizare reactioneaza 1 echivalent acid cu 1 echivalent baza
c= n,echivalenti/ V ,l c-este concentratie normala
n,acid=n,baza---> c,acidxV,acid=c,bazaxV,baza
0,1x14,5=c,bazax23---> caclculeaza c ,concentratia normala a bazei !!!!!
1dm³= 10⁻³m³
1m³ cationit...absoarbe 350 echivalenti gram ioni calciu
10⁻³m³..........................350x10⁻³-----> 350 miliechivalenti gram ioni calciu