Q3 of 13 Page 158

Answer the following:

Name the acid formed when sulphur dioxide dissolves in water.

Sulphur dioxide dissolves in water to give sulphurous acid.


The chemical equation for acid formation: SO2 + H2O → H2SO3


Also, water from rain reacts with sulphur dioxide to produce acid rain. Acid rain decreases the fertility of soil, it also corrodes buildings and monuments, and its harmful to aquatic life. Sulphurous acid are used as disinfecting agents.


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