Q. 345.0( 4 Votes )

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Answer :

When acetic acid is added to NaHCO3 solution, and when a burning splinter is brought carbon dioxide gas with brisk effervescence from the test tube.



This gas can be verified by following method:


When carbon dioxide gas is turned through lime water, the lime water turns milky. It turns milky due to formation of Calcium carbonate CaCO3 . The chemical reaction is as follows:



When carbon dioxide is passed through the calcium carbonate, calcium hydrocarbonate is formed and the milkiness of water disappears.



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