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Blue vitriol is commonly used in industrial dyeing processes. what is the chemical formula for blue vitriol, whose systematic name is copper(ii) sulfate? express your answer as a chemical formula.

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Answer is: chemical formula of blue vitriol is CuSO₄.
In this molecule copper has oxidation number +2 and sulfate has oxidation number -2, copper(II) sulfate has neutral charge (+2 +(-2) = 0).
Copper sulfate is produced industrially in chemical reaction of copper metal and hot concentrated sulfuric acid.

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