Cyanide solution (12.73 mL) was treated with 25.00 mL of Ni2 solution (containing excess

Chapter 11, Problem 11-34

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Cyanide solution (12.73 mL) was treated with 25.00 mL of Ni2 solution (containing excess Ni2) to convert the cyanide into tetracyanonickelate(II): Excess Ni2 was then titrated with 10.15 mL of 0.013 07 M EDTA. Ni(CN)4 2 does not react with EDTA. If 39.35 mL of EDTA were required to react with 30.10 mL of the original Ni2 solution, calculate the molarity of CN in the 12.73-mL sample. 11-35

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