Chemistry, asked by Areebanaz, 1 year ago

why lime water turns milky when carbon dioxide is passed through it

Answers

Answered by Anonymous
16
this is due to the unsoluble suspension of calcium carbonate formed . the milkyness disappears since calcium bicarbonate is water -soluble
Answered by Incredible29
29
Heya user
Here is your answer !!

When carbon dioxide is passed through lime water [ Ca(OH)2 ] , calcium carbonate is formed .
Calcium carbonate is white in colour and is insoluble in water .
So , it turns lime water milky .
When excess of CO2 is passed , calcium bicarbonate is formed which is again soluble in water . Hence , the milkiness will disappear .

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

CaCO3 + CO2 --> Ca(HCO3)2

Hope it helps !!
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