Prabin Kalikote

The uses of carbon dioxide gas are:
        - Green plants use CO₂ during photosynthesis.
        - It is used on fire extinguishers.
        - It is used to manufacture fertilizers.
        - It is used to make soft as well as hard drinks.
        - It used in carbonation process to purify sugarcane juice.

We all know, CO₂ gas is acidic in nature and water is neutral. When a mixture of CO₂ and H₂O is made the mixture will have acidic PH. which stimulates the taste buds with sour taste.

When Ca(HCO₃)₂ solution is heated, it gives calcium carbonate, water and CO₂.
                            Ca(HCO₃)₂ -------------> CaCO₃ + H₂O + CO₂

A balloon filled with CO₂ left free in the air will fall on the surface of the land because CO₂ cause it to fall due to its higher density than that of air.

The ribbon burns in CO₂ gas with dazzling light.

Lime water turns milky in color due to the formation of insoluble calcium carbonate (CaCO₃).
                            CO₂ + Ca(OH)₂ -------------> CaCO₃ + H₂O

Dry ice is the solid substance formed when CO₂ gas is cooled to below -78c.
        - It is used as a refrigerant to preserve foods.