Which phenomenon can occur due to prolonged electrochemical reactions at electrodes?

Which phenomenon can occur due to prolonged electrochemical reactions at electrodes?

• A. Electrode dissolution
• B. Temperature increase
• C. Color change in the electrolyte
• D. Gas production

Answer: (A)

The occurrence of electrode dissolution is a significant phenomenon that can happen due to prolonged electrochemical reactions at electrodes. This process involves the material of the electrode being oxidized and subsequently entering the electrolyte solution. This can be particularly pronounced in reactions where the electrode material is not inert or passive, leading to the eventual degradation of the electrode over time. In many electrochemical systems, especially those involving corrosion or in galvanic cells, the driving force for electron transfer can lead to metal ions dissolving into the electrolyte as the metal is oxidized. The extent of electrode dissolution can be influenced by various factors including the composition of the electrolyte, the applied potential, and the stability of the electrode material. Other phenomena such as temperature increase, color change in the electrolyte, and gas production can occur during electrochemical reactions, but they are not inherently linked to the dissolution of electrode material. While these phenomena may happen alongside electrode dissolution depending on the specific reaction conditions, they do not directly result from the electrochemical nature of the reactions as electrode dissolution does. Consequently, the primary effect of prolonged electrochemical reactions at electrodes is indeed the dissolution of the electrode material itself.

The occurrence of electrode dissolution is a significant phenomenon that can happen due to prolonged electrochemical reactions at electrodes. This process involves the material of the electrode being oxidized and subsequently entering the electrolyte solution. This can be particularly pronounced in reactions where the electrode material is not inert or passive, leading to the eventual degradation of the electrode over time.

In many electrochemical systems, especially those involving corrosion or in galvanic cells, the driving force for electron transfer can lead to metal ions dissolving into the electrolyte as the metal is oxidized. The extent of electrode dissolution can be influenced by various factors including the composition of the electrolyte, the applied potential, and the stability of the electrode material.

Other phenomena such as temperature increase, color change in the electrolyte, and gas production can occur during electrochemical reactions, but they are not inherently linked to the dissolution of electrode material. While these phenomena may happen alongside electrode dissolution depending on the specific reaction conditions, they do not directly result from the electrochemical nature of the reactions as electrode dissolution does. Consequently, the primary effect of prolonged electrochemical reactions at electrodes is indeed the dissolution of the electrode material itself.