Q. 35.0( 1 Vote )

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?


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 + CH3COOHCH3COONa + H2O + CO2


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