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20-07-2021
Chemistry

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In an experiment ,dry hydrogen gas was passed over hot copper (II) oxide in a combustion tube as shown in the diagram below

In an experiment dry hydrogen gas was passed over hot copper II oxide in a combustion tube as shown in the diagram below class=

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20-07-2021

Answer:

by upward delivery the gas collected at the end is hydrogen and hydrogen is lighter than air that is why we use the upward delivery or you can also say the downwards displacement of air [b] hydrogen +copper[ii]oxide⇒water+copper

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