Dissimilar metals will corrode in the presence of _______.Group of answer choicescaustic chemicalsan electrical currentan electrolytewater
Question
Dissimilar metals will corrode in the presence of _______.
Group of answer choices
- caustic chemicals
- an electrical current
- an electrolyte
- water
Solution
Dissimilar metals will corrode in the presence of an electrolyte. When two different types of metals are in contact with each other in the presence of an electrolyte, such as water with dissolved salts, it creates a galvanic cell. This results in one metal acting as an anode (which will corrode) and the other as a cathode. The electrolyte facilitates the flow of ions, thus accelerating the corrosion process. Therefore, when preventing galvanic corrosion, it is important to isolate dissimilar metals from each other and to minimize their exposure to moisture and electrolytic substances.
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