Question

what happens when co2 is passed through lime water?what happens when execss of co2 is passed through lime water?
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Answer 1

When CO2 is passed through lime water it turns lime water milky when passed in excess it turns it clear again due to formation of soluble bicarbonates

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Answer 2

Answer:

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Explanation:

When CO2 is passed through lime water, it turns

milky due to the formation of calcium carbonate which

is insoluble in water.

(limewater)Ca(OH)2+CO2⟶(milkiness)CaCO3+H2O

However, when excess of CO2 is passed through this

solution, the milkiness disappears. This is due to the

formation of calcium bicarbonate which is colorless and

soluble in water.

(milkiness)CaCO3+H2O+(excess)CO2⟶(water soluble)

Ca(HCO3)2

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