Why does diluted concentrated sulfuric acid have a pungent, foul smell?

2016-12-21View Original

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Why does concentrated sulfuric acid have a pungent, foul smell after being diluted? What causes this smell, and what are the components responsible for its strong odor?

Reply #22016-12-21

Exothermic dissolution occurs, and SO2 is released

Reply #32016-12-21

Gases such as SO2 are released; SO2 has a high solubility in acids at high concentrations

Reply #42016-12-22

But the original smell was very mild; these times it’s particularly strong, and staying in contact with this smell for a long time causes headaches. Is this due to the manufacturer? Wasn’t it said that it’s a problem with mineral acid and sulfuric acid?

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Why does diluted concentrated sulfuric acid have a pungent, foul smell?

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