A student dropped few pieces of marble in dilute HCl contained in a test tube The gas evolved was - Science - Chemical Reactions and Equations

Question

A student dropped few pieces of marble in dilute HCl contained
in a test tube The gas evolved was passed through lime water What
change would be observed in lime water ? Write the chemical
equation for both the changes observed

Kirti Gogia · Accepted Answer

Marble is chemically calcium carbonate When dilute HCl is added
to calcium carbonate, it forms calcium chloride, water and carbon
dioxide The chemical equation for the reaction is as follows
CaCO3 + 2HCl â†’ CaCl2 +
H2O + CO2
Carbon dioxide gas turns lime water milky due to the formation
of calcium carbonate Following is the chemical equation showing the
reaction between lime water and carbon dioxide
Ca(OH)2 + CO2 â†’
CaCO3 + H2O

A student dropped few pieces of marble in dilute HCl contained in a test tube. The gas evolved was passed through lime water. What change would be observed in lime water ? Write the chemical equation for both the changes observed.