CBSE Class 10 Science 2019 Outside Delhi Set 1

Question : 23

Total: 27

What is observed when a pinch of sodium hydrogen carbonate is added to 2‌mL of acetic acid taken in a test tube? Write chemical equation for the reaction involved in this case.

Solution:

CO2 gas is evolved with brisk effervescence when sodium hydrogen carbonate is added to acetic acid.

NaHCO3

Sodium hydrogen carobonate

CH3‌COOH

Acetic acid

→

CH3‌COONa

Sodium acetate

H2O

water

CO2

carbandioxide

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