Question

On adding acetic acid to sodium hydrogen carbonate in a test tube, a student observes
(A) no reaction
(B) a colourless gas with pungent smell
(C) bubbles of a colourless and odourless gas
(D) a strong smell of vinegar

Answer 1

Answer:

d is correct answer for this

Answer 2

(C) bubbles of a colourless and odourless gas

Explanation:

On adding acetic acid to sodium hydrogen carbonate in a test tube, the student will witness a brisk effervescence. The fizzing is due to the liberation of carbon dioxide gas. In order to identify the gas, we can pass it through lime water. The lime water will turn milky, thus proving that the gas liberated is carbon dioxide.

NaHCO3 + CH3COOH = CH3COONa + H2O + CO2