A commercial algaecide containing an organocopper compound was treated with concentrated nitric acid and evaporated to dryness. After dissolution of the residue, the copper was precipitated with -benzoin oxime. If the sample weighed 15.443 g and the precipitate of Cu(C14H12NO2)2 weighed 0.6314 g, calculate the % Cu in the algaecide.

Answer 1

g Cu = mass Cu(C14H12NO2)2 x [atomic mass Cu/molar mass Cu(C14H12NO2)2]

Then %Cu = (g Cu/15.443)*100

Answer 2

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