Feb 18, 2014 · Re: Neutralization of Sulfuric acid in copper sulfate solution. 02/17/2014 7:40 AM. Barium sulphate is very insoluble, so you could add barium hydroxide. Calcium sulphate is moderately soluble, about gm/l, which I would guess is too high for your needs. But if not calcium hydroxide (lime) is likely to be much more readily available, and ...
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