alleryThe standard hydrogen electrode uses platinum coated with:
APlatinum black
BCopper oxide
CSilver powder
DCarbon paste
Answer & Solution
Correct answer: A. Platinum black
1. The electrode itself is a piece of platinum.
2. Its surface is finely divided to speed the reaction.
3. That coating is platinum black.
_Source: syllabus Chemistry Part I, Chapter 3, Electrochemistry._
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