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eoo.o ELECTROLYTE COMPOSITION soo.o 400.0 A - 3.0 MOLAR ZnCl2 B - 2.0 MOLAR ZnCl2 300.0 C - 1.0 MOLAR ZnCl2 D - 0.5 MOLAR ZnCl2 200.0 E-H,0 100.0 90.0 80.0 70.0 80.0 50.0 40.0 Figure 30-3. pH of ZnCl2 solutions as a function of the free acid concentration. pH Effects of NaCl and KC1 in ZnCl^ Solutions To evaluate the pH effects of sodium chloride and potassium chloride the following procedure was used. A stock solution of 2-molar zinc chloride was carefully adjusted to its stoichiometric pH. Three 50ml aliquots of this solution were then placed in 150ml beakers. The first beaker served as a control and 0.15 moles of NaCl were added to the second beaker. To the third beaker, 0.15 moles of KC1 were added. Thus, the molality of zinc chloride (moles ZnClg/kg H20) was the same in each beaker. Also, the second and third beaker each contained 3.17 molal additional salt. 30-5PDF Image | Development of the Zinc-Chlorine Battery for Utility
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