A 1.00 mL sample of tap water is combined with 2.00 mL of buffer (maintains a pH
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A 1.00 mL sample of tap water is combined with 2.00 mL of buffer (maintains a pH of 4.00) and diluted in a volumetric flask to a final volume of 10.00 mL. The electrode reads +3.00 mV vs the Saturated Calomel Electrode (SCE) reference. Another 1.00 mL sample of tap water is spiked with 2.00 mL of 4.00×10-5 M fluoride standard, plus 2.00 mL of the pH 4.00 buffer, and diluted to 10.00 mL. The diluted solution reads -0.021 V vs SCE. Assume Nernstian response
Hg2Cl2(s) + 2e- → 2Hg(l) + 2Cl- (sat’d KCl) Eo = +0.242 V
Related Book For
Engineering Economy
ISBN: 978-0132554909
15th edition
Authors: William G. Sullivan, Elin M. Wicks, C. Patrick Koelling
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