write the balance chemical equation for the preparation of hydrogen how the gas is collected in the laboratory ?
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5
Explanation:
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.
- Reaction:
- Collection of Gas: Hydrogen gas is collected by downward displacement of water.
Answered by
4
Answer:
In a conical flask, fitted with the delivery tube, few grams of granulated zinc is taken. Then dil. HCl is added. Zinc reacts with HCl to form zinc chloride and hydrogen gas.
Zn+2HCl→ZnCl
2
+H
2
↑.
The liberated hydrogen gas is collected in an inverted test tube placed in a water trough.
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