A Mining Operation Needs to Separate Silver and Copper

question 37

Multiple Choice

A mining operation needs to separate silver and copper. You are hired as a summer intern in a beautiful Colorado mining town, and one of your tasks is to determine whether this separation can be accomplished by oxidizing the metals to Ag⁺ and Cu⁺, each one at a concentration of 0.15 M, and then precipitating one as the chloride salt without precipitating the other. AgCl precipitates first. What is the concentration of the Ag⁺ remaining in solution when CuCl begins to precipitate? For AgCl, pK_sp = 9.74, and for CuCl, pK_sp = 6.76.

• A) 1.57 *10^-2 M
• B) 1.57 *10^-4 M
• C) 2.23 *10^-2 M
• D) 2.23 * 10^-4 M
• E) 3.72 * 10^-3 M

---

Definitions:

Purchase Objections

Purchase objections are reasons or arguments presented by potential buyers indicating why they hesitate or decide not to buy a product or service.

Channel And Medium

The means or pathways through which a message is communicated from sender to receiver.

Invasion Of Privacy

Unauthorized access into someone’s personal space, activities, or information, infringing on their right to privacy.

Deceptive Claims

False or misleading statements made to manipulate perceptions or convince others of something that is not true.