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4. Calcium chromate is a pigment for textiles and a corrosion inhibitor. Unfortunately, its dissolution reaction releases carcinogenic Cr6+ to the environment: CaCrO4(solid) Ca+(aq) +

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4. Calcium chromate is a pigment for textiles and a corrosion inhibitor. Unfortunately, its dissolution reaction releases carcinogenic Cr6+ to the environment: CaCrO4(solid) Ca+(aq) + CrO4+ (aq) 2+ The Ksp for calcium chromate is 1.7x10+ M. At equilibrium, the activity of Ca2+ in solution is 0.027 M. What is the activity of CrO2?? (2 points)

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