Step 1: Understanding the Question:
The problem asks to identify the false statement from a list of properties concerning Galvanic (Voltaic) cells.
Step 2: Detailed Explanation:
Statement (A): Correct. Galvanic cells convert chemical energy into electrical energy using spontaneous redox reactions where \(\Delta G\) is negative.
Statement (B): Correct. The salt bridge is essential because it allows the flow of ions to balance the charge accumulation that occurs as the reaction proceeds, thus maintaining neutrality.
Statement (D): Correct. In any electrochemical cell (Galvanic or Electrolytic), oxidation always occurs at the anode and reduction always occurs at the cathode. (Mnemonic: An Ox, Red Cat).
Statement (C): Incorrect. In a Galvanic cell, the anode is the source of electrons (oxidation occurs there), so it is the negative terminal. The cathode receives these electrons and is the positive terminal. The statement provided has the signs reversed. (Note: Signs are reversed in electrolytic cells, but not in Galvanic ones).
Step 3: Final Answer:
The wrong statement is that the anode is positive and the cathode is negative in a Galvanic cell.