A Cell Is Set Up with Copper and Lead Electrodes

question 72

Multiple Choice

A cell is set up with copper and lead electrodes in contact with CuSO₄(aq) and Pb(NO₃) ₂(aq) , respectively, at 25°C. The standard reduction potentials are
Pb²⁺ + 2e^- → Pb E° = -0.13 V
Cu²⁺ + 2e^- → Cu E° = +0.34 V
If sulfuric acid is added to the Pb(NO₃) ₂ solution, forming a precipitate of PbSO₄, the cell potential

• A) It is impossible to tell what will happen.
• B) decreases.
• C) is unchanged.
• D) increases.

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