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Exp 12 Synthesis: Preparation of Alum Alum: potassium aluminum sulfate dodecahydrate

Exp 12 Synthesis: Preparation of Alum Alum: potassium aluminum sulfate dodecahydrate KAl(SO 4 ) 2 . 12H 2 O 1.) 2 Al (s) + 2 KOH (aq) + 6 H 2 O (l) ? 2 K[Al(OH) 4 ] (aq) + 3 H 2(g) 2.) K[Al(OH) 4 ] (aq) + 2 H 2 SO 4(aq) ? KAl(SO 4 ) 2(aq) + 4 H 2 O (l)

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