Evaluate the advantages of using a silver-silver chloride reference electrode over a calomel reference electrode in terms of construction and use.

• A. Calomel electrodes are more widely used.
• B. Silver-silver chloride electrodes are more stable and less toxic.
• C. Calomel electrodes are easier to construct and use.
• D. Silver-silver chloride electrodes have a higher potential.

Answer: (B)