Describe the laboratory preparation of hydrogen with the help of a diagram.
Answers
Answer:
kindly mark my answer as brainliest
Explanation:
The laboratory preparation of hydrogen gas usually involves the action of dilute sulphuric acid or dilute hydrochloric acid on zinc granules. Granulated zinc is ideal for the preparation of hydrogen gas in chemical laboratories because it usually contains a small amount of copper, which has the ability to act as a catalyst to the associated chemical reaction and, therefore, increase the rate of the chemical reaction without actually participating in it. An experimental procedure for the laboratory preparation of hydrogen gas is provided below.
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.
The setup for the laboratory preparation of hydrogen gas is illustrated below.
(image give above)
The chemical reactions that take place during the preparation of hydrogen gas via this method are listed below.
General Format: Metal + Dilute Acid → Salt of Metal & Acid + Hydrogen
With Hydrochloric Acid: Zn + 2HCl → ZnCl2 + H2
With Sulphuric Acid: Zn + H2SO4 → ZnSO4 + H2
Finally, the hydrogen gas can be collected by the downward displacement of water.
How will you prepare hydrogen in the laboratory?
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.
please thank my answer and make my answer brainliest