(i) Completely pure zinc metal is not used for the preparation of hydrogen because it is slowly attacked by the acid. The presence of impurities increases the rate of the reaction by forming electrochemical couples.
Hydrogen. Completely pure zinc metal is not used for the preparation of hydrogen because it is slowly attacked by the acid. The presence of impurities increases the rate of the reaction by forming electrochemical couples.
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Answer:
(i) Completely pure zinc metal is not used for the preparation of hydrogen because it is slowly attacked by the acid. The presence of impurities increases the rate of the reaction by forming electrochemical couples.
Explanation:
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Answer:
Hydrogen. Completely pure zinc metal is not used for the preparation of hydrogen because it is slowly attacked by the acid. The presence of impurities increases the rate of the reaction by forming electrochemical couples.
Explanation: