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InterviewSolution
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How can you prove that hydrogen gas releases when acid reacts with metals? (or) How can you produce hydrogen gas in the laboratory? |
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Answer» Aim: Acid reacts with metals and produces hydrogen gas Materials required: Conical flask, hydrochloric acid, zinc pieces, incense stick, match box. Procedure: Take 5g of zinc metal pieces in a conical flask. Pour 20 ml of dilute hydro-chloric acid into it. Now, observe what happens. Observation: The zinc pieces reacted with the hydrochloric acid and releases a gas. Test for hydrogen gas Now, introduce a incense stick into mouth of the conical flask. The flame of burning stick will put off with a pop sound. This is a test for hydrogen gas. Hydrochloric acid reacts with zinc metal and forms zinc chloride, releases hydrogen gas. This reaction can be written as a word equation, Zinc + hydrochloric acid → zinc chloride + hydrogen Conclusion: Hence, we can conclude that acids react with metals and release hydrogen gas. |
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