A Lab Technician Adds 0

question 3

Multiple Choice

A lab technician adds 0.20 mol of NaF to 1.00 L of 0.35 M cadmium nitrate, Cd(NO₃) ₂. Which of the following statements is correct? K_sp = 6.44 × 10^-3 for CdF₂.

• A) Cadmium fluoride precipitates until the solution is saturated.
• B) The solution is unsaturated and no precipitate forms.
• C) The solubility of cadmium fluoride is increased by the presence of additional fluoride ions.
• D) One must know K_sp for cadmium nitrate to make meaningful predictions on this system.
• E) The presence of NaF will raise the solubility of Cd(NO₃)₂.

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