Question

Q.6 When baking soda is mixed with lemon juice, bubbles are formed with the evolution of gas.
What type of change is it? Explain.​

Answer 1

Chemical change.

Explanation:

When baking soda is mixed with lemon juice, thebubbles which are formed with the evolution of a gas is due to theevolution of carbon dioxide gas. Since, there is formation of a new substance in this reaction, it is a chemical change.

Answer 2

When baking soda (Sodium hydrogen carbonate) is mixed with lemon juice (citric acid), bubbles are formed. The bubbles are formed due to the evolution of carbon dioxide gas. This is a chemical change.

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

Lemon juice + Baking soda → Carbon dioxide + Other substances

Citric acid Sodium

Hydrogen carbonate

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