Which of the following statements is true concerning half-cell II as the voltaic cell shown below discharges? A) [Cu²⁺] decreases with time,and [K⁺] increases with time. B) [Cu²⁺] increases with time,and [K⁺] increases with time. C) [Cu²⁺] decreases with time,and [K⁺] decreases with time. D) [Cu²⁺] decreases with time,and [SO₄^-] decreases with time. E) [Cu²⁺] increases with time,and [SO₄^-] increases with time.

Question

Quizplus · Accepted Answer

In half-cell II, Cu2+ ions are reduced to Cu metal, which means that the concentration of Cu2+ ions ([Cu²⁺]) will decrease with time. On the other hand, K+ ions from the salt bridge (KF1F1F1S1^F1F1F10) will move into half-cell II to balance the charge, causing an increase in concentration over time. Therefore, option A is the correct choice.

Which of the Following Statements Is True Concerning Half-Cell II