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Which of the following metal is used as a solid interface for hydrogen gas in the standard hydrogen electrode?

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Which of the following metal is used as a solid interface for hydrogen gas in the standard hydrogen electrode?

(a) Copper

(b) Zinc

(c) Gold

(d) Platinized platinum

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I'd like to ask this question from Modern Theory Principles in division Modern Theory Principles of Corrosion Engineering

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The correct answer is (d) Platinized platinum

For explanation: Platinized platinum metal is used as the solid interface for hydrogen gas in the standard hydrogen electrode. It is due to the inertness of the metal and ease with which electron transfer occurs on its surface. Platinized platinum is black platinum-coated platinum.

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