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in Chemistry by (69.2k points)

Common alum is 

(a)   K2 SO4 . Al2 (SO4)3 . 24H2

(b)   K2SO4 . Cr2 (SO4)3 . 24H2

(c)  K2 SO4 . Fe2 (SO4)3 . 24H2

(d)  (NH4)2 SO4 . FeSO4 . 6H2O

1 Answer

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Best answer

Common alum is K2 SO4 . Al2 (SO4)3 . 24H2O.

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