Question

why does lime water turns milky when Co2 is passed through it. what happens when Co2 is passed in excess. ​

Answer 1

When CO2 gas is passed through lime water it turns milky due to the formation of calcium carbonate which formula is CaCO3. when excess of carbon dioxide is passed through calcium carbonate calcium hydrogen carbonate is formed and solution become colourless.

Hope It Helps You!

Answer 2

Answer:

When CO2 is passed through lime water it turns milky due to formation of CaCO3. But if excess of CO2 is passed through lime water then Water soluble calcium bicarbonate will form and solution remains clear.

i hope this helps u.

thanks