Question

What happens when $C{O_2}$ is passed through lime water in excess?

Answer 1

We need to know that air is one of the most important things in our life. In the world, without air nothing is surveyed. For human beings, breathing purpose air is the important thing for inhaling and exhaling. For human respiration, oxygen is used for inhalation of breathing and carbon dioxide is exhaled gas. This inhale and exhale gas are important for human lifestyle to survey in the world. Each and every gas has unique properties and unique nature in the atmosphere. One gas is not able to replace another gas in the environment.

Complete answer:
We need to remember that when $C{O_2}$ is passed through lime water in excess to form calcium bicarbonate.
The molecular formula of soda lime is $CaC{O_3}$.
The molecular formula of calcium bicarbonate is $Ca{\left( {HC{O_3}} \right)_2}$.
The chemical reaction for the $C{O_2}$ is passed through lime water in excess to from calcium bicarbonate is given below,
$CaC{O_3} + {H_2}O + C{O_2} \to Ca{\left( {HC{O_3}} \right)_2}$
According to the above discussion and chemical reaction, we conclude it is when $C{O_2}$is passed through lime water in excess to form calcium bicarbonate.

Note:
We need to know that the chemical properties of the gas depend on the mixture of gases. All the gases are not helpful for the human body. Some gases are poisonous to the human body. It leads to death also. For example, wrong inhalation of carbon dioxide in the human body leads to death. Some cyanide gases and mono and dioxide gases also lead to human death in the world. In plants during the day, they inhale carbon dioxide from the atmosphere and exhale oxygen, but at night time they inhale oxygen and exhale carbon dioxide.