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Chemistry involved in the preparation of Potash Alum, K2SO4 •Al2(SO4)3 •24H2O

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Chemistry involved in the preparation of Potash Alum, K2SO4 •Al2(SO4)3 •24H2O

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It is a double salt of K2SO4 and Al2 (SO4)3 . In the solvent, it ionizes to its constituent ions:

• In the preparation of potash alum, concentrated H2SO4 is used to prevent hydrolysis of aluminium sulphate.

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