What does a galvanic table primarily describe?

What does a galvanic table primarily describe?

• A. The color of metals
• B. The mechanical strength of alloys
• C. The thermal conductivity of metals
• D. The relative reactivity of metals and semimetals in an electrolyte

Answer: (D)

The main idea is the electrochemical reactivity of metals in solution. A galvanic (activity) table ranks metals by how readily they lose electrons in an electrolyte, i.e., their tendency to be oxidized. Metals higher in the series are more reactive and can displace ions of metals lower in the series from solution, and this ordering is tied to their standard electrode potentials. This helps predict which metals will corrode or form galvanic couples in an electrolyte. The table does not describe color, strength, or heat conduction, which are unrelated to electrochemical behavior in solution.

The main idea is the electrochemical reactivity of metals in solution. A galvanic (activity) table ranks metals by how readily they lose electrons in an electrolyte, i.e., their tendency to be oxidized. Metals higher in the series are more reactive and can displace ions of metals lower in the series from solution, and this ordering is tied to their standard electrode potentials. This helps predict which metals will corrode or form galvanic couples in an electrolyte. The table does not describe color, strength, or heat conduction, which are unrelated to electrochemical behavior in solution.