Question

A student dropped few pieces of lime stone in dilute hydrochloric acid contained in a test tube. The evolved gas is then passed through lime water. What is the change observed when this gas 2 / is passed through lime water a) for a short duration b) for a long duration? Write down the relevant chemical equations for the reactions involved.

Answer 1

Hcl+Ca(OH) 2 gives rise to

Cacl+H2O

And duration is long time

Answer 2

Answer:

Explanation:

A) the lime water turns milky due to formation of calcium carbonate

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

B)When lime water is exposed to carbondioxide for a long time then this leads to formation of calcium hydrogen carbonate which dissolves in water. Hence sollution turns clear .

CaCO3+CO2+H2O-------------Ca(HCO3)2

Please mark as Brainliest