A procedure called coulogravimetric analysis combines

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Reference no: EM13159864

A procedure called coulogravimetric analysis combines a weight determination with a measurement of the quantity of electricity in a controlled-potential electrolysis to analyze bromide-chloride mixtures. An aqueous sample containing Br- and Cl- in exactly 25.00 mL of solution was oxidized at a silver anode to form both AgBr and AgCl. The mass (weight) of the silver anode before the electrolysis was 7.1725 grams, and the mass (weight) of the silver anode after the electrolysis was 7.4572 grams. In addition, the electrolysis involved the passage of 439.2 coulombs of electricity. Calculate the molar concentrations of Br- and Cl- in the original 25.00-mL sample.

Reference no: EM13159864

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