when excess of carbon dioxide gas is passed through lime water first it turns milky & then becomes colourless give reason for the change write the balance chemical equation for the reaction
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When the excess carbon dioxide gas is passed through the lime water, it turns milky first due to the formation of the calcium carbonate as a precipitate which is insoluble in water and then become colorless due to the formation of calcium bicarbonate.
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It becomes milky due to formation of calcium hydroxide. It furthur turns colourless due to formation of calcium carbonate. One can check the balanced equation in the ncert solutions of science book class 10 . It is a question from exercise.
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