3. Properly name the following double salts: al NaAl(SO4)2 12 H20 b] LiCr(SO4)2 12 H20 c] NH4Fe(SO4)2 12 H20 4. Define these words: a] alum b] hydrate 22 .15 H c] oxidation 5. Why shouldn't aluminum salts be used to manufacture paper products like books? 6. Write a balance equation for the reaction between sulphuric acid, H2SO4, and diethyl zinc gas, Zn(CH3CH2)2. This is a double replacement reaction. 7. Assuming a 100 % yield, 1.00 gram of aluminum will produce how many grams potassium aluminum sulphate dodecahydate? KAI(OH)4 (aa)+ 1/½ H2 (a) () Al (s) KOH (aq) + 3 HOH KAI(SO4)2 (aq)+ 4 H20 () 2 H2SO4 (aa) KAI(OH)4 (aq) + 12 HaQ's) 1/A

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