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.

---

Definitions:

Future Value

The estimated value of an investment at a future date, taking into account variables like interest rates or compound interest, used in financial planning and assessment.

Interest Rate

The fraction of a loan amount that is applied as interest for the borrower, commonly indicated as an annual percentage of the remaining loan balance.

Compounded Annually

Interest calculation method where interest is added to the principal at the end of each year, and future interest calculations include this additional amount.

Interest

The cost of borrowing money or the return on investment for lenders, typically expressed as a percentage.