What happened when sulphur dioxide gas is dissolved in water? how will you be sure about the nature of the substance (acidic or basic)
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When sulphur dioxide is dissolved in water it forms sulphurous acid.
SO2 + H2O → H2SO3
Sulfurous acid is a good reducing agent
When we dip a red litmus paper into the solution it will not change its colour
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So2+H2O= H2so2 is correct
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