Question

What happens when we pass co2 through lime water for a long period of time.
why

Answer 1

The CO2 reacts with the limewater to form a milky solution. This is due to the formation of Calcium carbonate which is not very soluble in water.

The equation for the reaction is:

Ca(OH)2 + CO2 ----> CaCO3 + H2O

I'm also correcting my answer: after a long period of time the solution will become clear due to the formation of the more soluble calcium bicarbonate.

Answer 2

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➷ The limewater will turn cloudy/milky. This is because this reaction causes the insoluble calcium carbonate to form. As it is insoluble, it turns the solution cloudy. (this would happen if it was a short time.) Over a longer period of time, the solution would turn clear again. This is because a salt called calcium hydrogen carbonate is formed from the calcium carbonate. This salt is soluble and would dissolve, causing it to turn clear again.

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➶ Hope This Helps You!

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