What Minimum Mass of Copper (II)nitrate Must Be Added to 30.0

question 53

Multiple Choice

What minimum mass of copper (II) nitrate must be added to 30.0 mL of a 0.0387 M phosphate solution in order to completely precipitate all of the phosphate as solid copper (II) phosphate?
2PO₄^3-(aq) + 3Cu(NO₃) ₂(aq) $\to$ Cu₃(PO₄) ₂(s) + 6NO₃^-(aq)

• A) 0.218 g
• B) 0.653 g
• C) 0.145 g
• D) 0.0726 g
• E) 0.327 g

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