Chemical reaction between Zn and Hcl in Chemical Reactions and Equations – Class 10 Science Experiment

Chapter Name: Chemical Reactions and Equations

Activity Name: Chemical reaction between Zn and Hcl in Chemical Reactions and Equations

Activity Description:

Chemical reaction between Zn and Hcl in Chemical Reactions and Equations - Class 10 Science Experiment
Chemical reaction between Zn and Hcl in Chemical Reactions and Equations - Class 10 Science Experiment

In this experiment, you will observe the chemical reaction between zinc (in the form of zinc dust) and dilute hydrochloric acid. The reaction will liberate hydrogen gas, which will cause a balloon tied to the mouth of the conical flask to bulge out.

Required Items:

  1. Zinc dust
  2. Dilute hydrochloric acid
  3. Conical flask
  4. Balloon

Step by Step Procedure:

  1. Take a small quantity of zinc dust and place it in a conical flask.
  2. Slowly add dilute hydrochloric acid to the flask.
  3. Immediately after adding the acid, tie a balloon to the mouth of the conical flask.
  4. Observe the changes in the conical flask and the balloon closely.

Experiment Observations:

  • As the reaction proceeds, you will notice gas bubbles coming out from the solution in the conical flask.
  • The balloon tied to the flask will start to bulge out, indicating the production of gas.

Precautions:

  1. Perform the experiment in a well-ventilated area or under a fume hood to avoid inhaling any fumes that may be released during the reaction.
  2. Handle the hydrochloric acid with care and wear appropriate protective gear, such as gloves and safety goggles.
  3. Use a small quantity of zinc dust and dilute hydrochloric acid to avoid any uncontrollable or excessive reaction.

Lesson Learnt from Experiment:

This experiment demonstrates a classic example of a chemical reaction between zinc and hydrochloric acid, producing hydrogen gas. It also showcases the principles of gas evolution reactions and the importance of balancing chemical equations to understand the stoichiometry of the reaction.

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