51. Solution to Chemistry Problem

51. Solution to Chemistry Problem

44. To determine copper in a non-ferrous alloy, 250 cm3 of a colored solution was obtained from a 0.350 sample after dissolution and treatment with ammonia, the optical density of which in a 0.1 dm3 cuvette was 0.200. Determine the mass fraction of copper (in %) if the molar absorption coefficient of copper ammine is 450.

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