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When another reaction is meant:

H2SO4 --> SO3 + H2O then this makes more sense than the non-descriptive symbols like ½, æ, ¾ in the above " H½SO æ SO¾ plus H½O "

Though this reaction H2SO4 --> SO3 + H2O is possible, it is a highly unlikely (endothermic) reaction called de-hydratation of sulfuric acid.

The other way around SO3 + H2O --> H2SO4 is far more favoured and very, dangerously exothermic. It might set paper in fire and SO3 'burns' your skin until carbonized.

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11y ago

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