When you add a few drops of acetic acid to a test-tube containing sodium bicarbonate powder, which one of the following is your observation?

No reaction takes place

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A colourless and odourless gas is released with brisk effervescence

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A brown coloured gas is released with brisk effervescence

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Colour of solution changes

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Solution

The correct option is B A colourless and odourless gas is released with brisk effervescence
$C H_{3} C O O H + N a H C O_{3} \to C H_{3} C O O N a + C O_{2} + H_{2} O$
$C O_{2}$ is formed in this reaction. It is a colourless and an odourless gas. Brisk effervescence of carbon dioxide gas is obtained. All metal carbonates and hydrogencarbonates react with acids to give a corresponding salt, carbon dioxide and water.

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Similar questions

Q. When you add a few drops of acetic acid to a testube containing sodium bicarbonate powder, which one of the following is your observation?
(a) No reaction takes place.
(b) A colourless gas with pungent smell is released with brisk effervescence.
(c) A brown coloured gas is released with brisk effervescence.
(d) Formation of bubbles of a colourless and odourless gas.

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

A student takes $N a_{2} C O_{3}$ powder in a test tube and pours some drops of acetic acid over it. He observes:

A reddish brown vessel developed a green coloured solid X when left open for a long time When reacted with dil $H_{2} S O_{4}$ (sulphuric acid) it forms a blue coloured solution along with brisk effervescence due to colourless and odourless gas Z .X decomposes to form a black coloured oxide Y of a reddish brown metal along with gas Z Identify X Yand Z

Q. A student takes 2 mL acetic acid in a dry test tube and adds a pinch of sodium hydrogen carbonate to it. He makes the following observations:
I. A colourless and odourless gas evolves with a brisk effervescence.
II. The gas turns lime water milky when passed through it.
III. The gas burns with an explosion when a burning splinter is brought near it.
IV. The gas extinguishes the burning splinter that is brought near it.
The correct observations are:

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