Question

mention the precautions to be taken in the experiment to show that hydrogen gas is evolved when metals react with acids mention the experimental procedure​

Answer 1

Explanation:

Step 1: Take a few grams of zinc granules and place them in a 500 mL flask.

Step 2: With the help of a thistle funnel, add dilute hydrochloric acid to the zinc granules. ...

Step 3: Hydrogen gas will be automatically collected with the help of a delivery tube via the downward displacement of water.