Which statement is true regarding alloy corrosion?

The statement that alloy corrosion may involve multiple anodic reactions is accurate because when alloys corrode, the various metallic components within the alloy can exhibit different electrochemical behaviors. This variation arises from the different potentials of the metals, which leads to differential corrosion rates among the various constituents of the alloy. In a corroding alloy, the more noble metals may act as cathodes, while the less noble metals serve as anodes, thus allowing for multiple anodic reactions that can occur simultaneously throughout the alloy.

This complexity in reactions, stemming from the different metals in the alloy, is a crucial consideration for understanding corrosion behavior. It highlights the fact that alloying can lead to localized corrosion phenomena—such as galvanic corrosion—where specific regions of the alloy may corrode more quickly due to electrochemical differences.

In contrast, other statements do not accurately reflect the nature of alloy corrosion. For instance, alloy corrosion does not necessarily involve fewer reactions than pure metal corrosion. Additionally, it’s not correct to say that alloy corrosion exclusively engages anodic reactions or that it never generates cathodic reactions; the reality is that cathodic reactions are an integral part of the overall corrosion process, occurring alongside anodic reactions. Hence, the presence and activity of multiple