Question

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Question❓
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Explain laboratory preparation of Hydrogen

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By@Amani11❤✌
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Answer 1

Hydrogen is prepared in the laboratory by the action of the dilute hydrochloric acid or dilute sulphuric acid on granulated zinc. Use of Granulated Zinc. Granulated zinc contains an impurity like copper which acts as a positive catalyst. A positive catalyst increases the rate of a chemical equation.

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Answer 2

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Hydrogen is prepared in the laboratary method by the action of dilute hydrochloric or sulphuric acid .

Place some pieces of granulated zinc in a flat - bottomed flask (Woulfe's bottle) , fitted with an airtight cork with two holes . Through one hole pass a thistle funnel with a long term and through the other , a long delivery tube . Next , pour dil.hydrochloric acid (or dil.sulphuric acid) Through the funnel . When we do this , we will see a brisk effervescence taking place in bottle and the evolution of hydrogen gas . If we find that the action is bit slow , add a little concentrated acid . When all the air has been expelled , collect the gas .

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