When you add sodium hydrogen carbonate to acetic acid in a test tube, a gas liberates immediately with a brisk effervescence

CBSE Class 10 CBSE Class 10 Science
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1

When you add sodium hydrogen carbonate to acetic acid in a test tube, a gas liberates immediately with a brisk effervescence. Name this gas. Describe the method of testing this gas.

2

Sodium hydrogencarbonate on reaction with acetic acid releases carbon dioxide gas.

NaHCO3 + CH3COOH → CH3COONa + HaO + CO2

Test for carbon dioxide:
The presence of carbondioxide can be tested by brining a burner splinter near the mouth of the cylinder containing carbondixide-it gets extinguished.

If carbon dioxide is passed through limewater, it turns milky white.

Ca(OH)2 + CO → CaCO3 + HzO