Question

14. In the laboratory preparation of hydrogen,
(a) state the reactants used,
(b) write the reaction involved,
(c) state the method of collection, and
(d) write the drying agent used.​

Answer 1

Explanation:

Procedure for the Laboratory Preparation of Hydrogen Gas

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. If hydrochloric acid isn’t available, dilute sulphuric acid can be used as an alternative.

Step 3: Hydrogen gas will be automatically collected with the help of a delivery tube via the downward displacement of water. This can be explained by the fact that hydrogen gas is lighter than water.