Question

1.
A student added acetic acid to test tubes I, II, III, and IV and then introduced a burning candle near the mouth of each test tube.







The candle would not be extinguished near the mouth of test tubes

(a) I and II. (b) II and III. (c) III and IV. (d) I and IV.

Answer 1

Answer:

When acetic acid (CH3COOH) is added to sodium bicarbonate (NaHCO3) solution, and a burning splinter is brought near the mouth of each test tube, then the splinter would be extinguished due to the evolution of carbon dioxide (CO2) gas from the test tube.

Explanation:

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