Making a fire extinguisher. Arrange the apparatus as shown in Figure (a). Add the vinegar contained in the test tube to the sodium bicarbonate (baking soda) solution (Figure (b)) by tilting the wash bottle. Introduce the resultant gas to a candle flame. Record your observation. What is your inference?

Question

Philoid · Accepted Answer

When vinegar will react with baking soda solution then CO₂ gas will evolve because acetic acid is present in vinegar. And when this gas will pass to candle flame then this gas will put out the candle flame. So from this it is clear that CO₂ gas is non-supporter of combustion.

NaHCO₃ + CH₃COOH CH₃COONa + H₂O + CO₂