Question

reaction involved.
3. a) What happens when CO2 is passed though lime water? Write the equation of the
b) What will happen if excess of CO2 is passed through the above reaction mixture?
Explain with the help of an equation.​

Answer 1

Explanation:

a.When CO2 is passesthrough the the lime water following reaction take place .. CaCO3+CO2+H2O=Ca(HCO)3(when excess of carbon dioxide is passed through the solution , the turbidity disappears and a clear solution is obtained due to the formation of calcium bicarbonate which is soluble inwater).

b.CaCO3+CO2+H2O=Ca(HCO)3(when excess of carbon dioxide is passed through the solution , the turbidity disappears and a clear solution is obtained due to the formation of calcium bicarbonate which is soluble in water). ... Thisreaction is used as a indicator forcarbon dioxide.

Answer 2

Answer:

When CO2 is passes through the the lime water following reaction take place .. CaCO3+CO2+H2O=Ca(HCO)3(when excess of carbon dioxide is passed through the solution , the turbidity disappears and a clear solution is obtained due to the formation of calciumLime water is basically an aqueous solution of Calcium Hydroxide , formula, Ca(OH)2 .

So this solution is alkaline, and Carbon Dioxide is acidic oxide. So when Carbon dioxide ( CO2 ) is passed through lime water, an Acid-Base reaction takes place producing salt and water.

The reaction is written as,

Ca(OH)2+CO2→CaCO3+H2O bicarbonate which is soluble in water)