Question

naoh role in edta titration

Answer 1

Answer:

You may use Na-EDTA, which is soluble salt. Or you make it by adding NaOH toEDTA - when the pH rises more carboxyls become dissociated (COO-) releasing protons (H+) to the solution (which is the principle of its pH buffering ability). Dissociated EDTA is ionic and thus water soluble.