In a system with two unlike metals submerged in an electrolyte, what term is used for the metal that accumulates electrons?

• A. negative pole
• B. positive pole
• C. neutral pole
• D. grounded pole

Answer: (A)

The term used for the metal that accumulates electrons in a system with two unlike metals submerged in an electrolyte is the negative pole. When two dissimilar metals are placed in an electrolyte, one metal tends to lose electrons (becoming positively charged) while the other metal gains electrons, thereby becoming negatively charged. This accumulation of electrons causes that metal to be identified as the negative pole since it has a surplus of electrons compared to the other metal.

In this context, the designation of negative pole is critical in understanding galvanic cells and electrochemical cells where electron flow occurs. The differentiation between the negative and positive poles reveals the electrochemical potential and helps in analyzing the behavior of the metals in the electrolyte environment. In summary, identifying the metal that accumulates electrons as the negative pole is essential for understanding the principles of electrochemistry and the interactions between different metals in a solution.