Question

a student dropped few pieces of marble in dilute hcl acid contained in a test tube . the evolved gas was then passed through lime water . what change would be observed in lime water ? what will happen if excess of gas is passed through lime water ? with the help of Balanced chemical equation for all the changes explain the observation ​

Answer 1

Explanation:

hhttjjjttjtjtjbt hbbfbdjkdjbnfnbotkttbjobtb

Answer 2

Answer:

When a few pieces of marble are dropped in hydrochloric acid, calcium chloride, water and carbon dioxide gas are formed.

The chemical equation for this reaction is as follows:

CaCO3 + 2HCl -----> CaCl2 + H2O + CO2

The evolved gas (i.e., carbon dioxide) turns lime water milky.

The chemical equation for this reaction is as follows:

Ca(OH)2 + CO2�-----> CaCO3 + H2O