13. Solving a chemistry problem

2. Which electrolyte ions: Na2SO4, KBr, CaI2 will occupy a large proportion of the adsorbent surface (see the first question)
(FIRST QUESTION) - Draw a diagram of the electrical double layer on the surface of manganese carbonate obtained by mixing 20 ml of 0.005 N sodium carbonate solution and 50 ml of 0.001 N manganese chloride solution. Give the names of each of the zones (DES)