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H2SO3 ( Sulphurous Acid) as ther name suggests , it is an acid.

Note the spelling of the name, It is the sulphur in oxidation state (IV ; (4))

Compare to Sulphuric Acid (H2SO4), where the sulphur is in oxidation state (VI : (6)).

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lenpollock

Lvl 17
5mo ago

What else can I help you with?