Question

limewater turns milky when carbon dioxide gas is passed through it and further than colourless when excess carbon dioxide is bubbled through it explain

Answer 1

Lime water is calcium hydroxide.
When CO2 is passed through it it turns milky due to the formation of calcium carbonate.

Ca(OH2 + CO2 ---------> CaCO3 + H2O.


But when excess CO2 is passed , the milkiness disappears because the calcium carbonate is converted to calcium bicarbonate.

CaCO3 + H2O + CO2 ------> Ca(HCO3)2.



- Mâhêshwáràñ.

Answer 2

Carbon dioxide gas is given off in the reaction between vinegar and baking soda. The rising bubbles confirm the release of the carbon dioxide gas. This gas when passed through lime water, it turns milky. This is due to the formation of calcium carbonate.

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