Development of the Zinc-Chlorine Battery for Utility

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Development of the Zinc-Chlorine Battery for Utility ( development-zinc-chlorine-battery-utility )

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The pH change of the three solutions was recorded as 6M HCI was added in small incre­ ments. The use of 6M HCI was dictated by the desire to minimize volume expansion. The pH curves for these three solutions are shown in Figure 30-4. 400.0 300.0 200.0 90.0 80.0 70.0 60.0 50.0 Q 30.0 20.0 ELECTROLYTE COMPOSITION H X - 2.06 MOLAL ZnCl2 + 3.17 MOLALNaCl Y Z - 2.06 MOLAL ZnCl2 - 2.06 MOLAL ZnCl2 3.17 MOLAL KC1 Plot of pH of ZnCl2 Figure 30-4. solutions as a function of free acid concentration in the presence of a supporting electrolyte. DISCUSSION Solutions of zinc chloride are acidic due to the hydrolysis of the zinc ion. Bieder- man (30-2), Schorsch (30-3), and Perrin (30-4) have evaluated the hydrolysis of zinc 30-6

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