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PRE-LAB QUESTION Balanced equations for the reactions occurring in the zinc iodide and alum synthesis labs are shown below. Using the methods outlined in the introduction, categorize each of these reactions as a redox, acid/base, or precipitation reaction. Show your work. Zn,(s) 3H,O(l) i· Zn(s) + 12(s) → 측H2(g) 2 So(a)4 H,OD) Al(s) OH (aq) Al(OH)4. (aq) K ii. AKOH)(a) 10. + + -→ + 2 H,SO,(aq)* Al(aq) to. K(a)+Al (a)+2S0t (a)+1211,00> KAl(SO)2 1211,0(s)

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Zncs 12 c> nIS) exothermic: Redox reaction 2) ythesis of alus 十6H20 Redox reacti σ。 2 A1COH) +12 H20@t→ kAI(S04)2. 12Hao (S)

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