_________ causes bubble formation when acid reacts with carbonates.

Salt

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C O_{2}

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Water

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Oxygen

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Solution

The correct option is B $C O_{2}$
When acids react with carbonates, such as calcium carbonate (found in chalk, limestone and marble) a salt, water and carbon dioxide are made. Carbon dioxide is formed as by product which causes bubbling during the reaction and can be detected using limewater.
$A c i d + M e t a l c a r b o n a t e \to S a l t + W a t e r + C a r b o n d i o x i d e$

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Similar questions

Among the following, the rate of formation of bubbles, when it is reacted with acid, is fastest in case of _________.

C O_{2}

H_{2} S O_{4}

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