Question

Select among the following statements that characterize a galvanic cell?
I: Oxidation occurs at the anode, which is negative.
II: Oxidation occurs at the anode, which is positive.
III. Reduction occurs at the cathode, which is positive.

• A. II only
• B. III only
• C. I and III
• D. I, II and III
• E. II and III

Answer 1

The correct option is C I and III

The statements I and III characterized a galvanic cell.
I: Oxidation occurs at the anode, which is negative.
Oxidation at anode results in the transfer of electrons to the electrode. The anode, therefore, acquires a negative charge that corresponds to a low potential.

III. Reduction occurs at the cathode, which is positive.
The species that undergoes reduction at cathode removes electrons from cathode leaving a positive charge on it which corresponds to a high potential.