Chemical Reactions and Equations | Activity 1.3 with Solution

Activity 1.3

• Take a few zinc granules in a conical flask or a test tube.
• Add dilute hydrochloric acid or sulphuric acid to this (Fig. 1.2).

CAUTION: Handle the acid with care.

◾ Do you observe anything happening around the zinc granules?

   Answer:

    Bubbles are observed around zinc granules due to release of hydrogen.

◾ Touch the conical flask or test tube. Is there any change in its temperature?

   Answer:

    Conical flask becomes hot. Because it is an exothermic reaction.