When Mixed, Solutions of Copper(II)nitrate, Cu(NO₃)₂, and Sodium Phosphate, Na₃PO₄

question 106

Multiple Choice

When mixed, solutions of copper(II) nitrate, Cu(NO₃) ₂, and sodium phosphate, Na₃PO₄, will form a precipitate of copper phosphate, Cu₃(PO₄) ₂. The balanced equation is 3Cu(NO₃) ₂(aq) + 2Na₃PO₄(aq) → Cu₃(PO₄) ₂(s) + 6NaNO₃(aq) Which of the following statements regarding this reaction is incorrect?

• A)8 moles of Na₃PO₄ will react with 12 moles of Cu(NO₃)₂.
• B)1 mole of NaNO₃ should form when 0.5 mole of Cu(NO₃)₂ reacts with sufficient Na₃PO₄.
• C)12 moles of Cu₃(PO₄)₂ should form when 36 moles of Cu(NO₃)₂ reacts with sufficient Na₃PO₄.
• D)If 10 moles of Na₃PO₄ react with sufficient Cu(NO₃)₂, 4 moles of Cu₃(PO₄)₂ should form.
• E)If 5 moles of Cu₃(PO₄)₂ are needed, it would require the combination of 15 moles of Cu(NO₃)₂ and 10 moles of Na₃PO₄.

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