How does the current flow in an electrolytic system?

How does the current flow in an electrolytic system?

• A. Left to right
• B. From noble to active through the metallic path
• C. From active to noble through the electrolyte
• D. Through the soil only

Answer: (C)

In an electrolytic system, current flow occurs from active to noble through the electrolyte. This is based on the electrochemical series, where metals that are more active tend to lose electrons and become oxidized, while those that are more noble tend to gain electrons and become reduced. Therefore, the flow of current, which is essentially the movement of electrons, aligns with the transfer of charge from the more active electrode to the more noble electrode through the electrolyte.

In practical terms, when an active metal is corroding, it releases electrons, leading to a flow of positive ions towards the noble metal, completing the electrochemical circuit. This process is essential for understanding corrosion mechanisms and the behaviors of different metals in corrosive environments.

While other options mention specific directions or pathways, they do not accurately portray the fundamental mechanism of current flow in electrolytic processes, which is driven by the activity levels of the metals involved.