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Calculating ppm

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The chloride in a saline solution was determined by the Volhard method. A 25 ml aliquot of the solution was acidified with 2 ml of dilute HNO3 and treated with 25 ml of .1749 M AgNO3 (fw 169.9), causing precipitation of AgCl. After addition of several ml of nitrobenzene, the solution required 26.40 ml of .1575 M KSCN to reach the FeSCN end point. Calculate the ppm (mg/L) concentration of Cl (fw 35.453) in the saline solution.

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The reaction stoichiometrics are one to one.

Therefore, amount of Ag+ ...

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