Why, when gas is passed through a solution of lime water, turbidity first occurs, and then the suspension dissolves?

At the first stage, an insoluble salt is formed – calcium carbonate. With further passage of CO2, calcium bicarbonate with better solubility is formed.

Са(ОН)2 + СО2 = СаСО3 + Н2О

Са2+ + 2ОН + СО2 = СаСО3 + Н2О

СаСО3 + Н2О + СО2 = Са(НСО3)2

СаСО3 + Н2О + СО2 = Са2+ + 2НСО3

For the reactions indicated in Section 2, the reduced ionic equations coincide with the complete ones.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.