When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain.

 

Answer:

  • When baking soda is mixed with lemon juice, bubbles are formed due to the evolution of carbon dioxide gas
  • Since a gas is being evolved , this is a chemical change .

Lemon juice (Acetic acid) + Baking Soda (Sodium Bicarbonate) —> Carbon Dioxide gas + other substances

  • In this change, citric acid contained in lemon juice reacts with sodium hydrogen carbonate which results in the evolution of carbon dioxide gas.

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CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo