Dilute Sulfuric Acid: Concentrated Acid Poured into Water

Dilute sulfuric acid, for dissolving copper oxide into copper sulfate and for pickling, is made from the concentrated acid. Mixing the two gives off a great deal of heat, so the acid always goes into the water, slowly, never the water into the acid. We make it about 10 % by weight.

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Aside ya sulifuriki yoroheje

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Concentrating Chamber Acid to Oil of Vitriol: Lead Pans, Then Glass

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