Question

zinc granules are used in lab preparation of hydrogen ​

Answer 1

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Zinc granules are used as the lab preparation in hydrogen because it will help for the reaction of decomposition

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Answer 2

Granulated zinc reacts with most acids to release Hydrogen gas. Granulated zinc gives more surface area for the acid to act, so hydrogen is formed faster. Also, granulated zinc has copper as an impurity, which catalyses the reaction

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