Thursday, April 29, 2021

Acids, Bases and Salts | Class 10 | Activity 2.3 with Solution

Activity 2.3  

CAUTION: This activity needs the teacher’s assistance.
  • Set the apparatus as shown in Fig. 2.1.
  • Take about 5 mL of dilute sulphuric acid in a test tube and add a few pieces of zinc granules to it.
  • What do you observe on the surface of zinc granules?
  • Pass the gas being evolved through the soap solution.
  • Why are bubbles formed in the soap solution?
  • Take a burning candle near a gas filled bubble.
  • What do you observe?
  • Repeat this Activity with some more acids like HCl, HNO3 and CH3COOH.
  • Are the observations in all the cases the same or different?

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