Homework Answers
- Possible reasons are :
- The aluminium taken is already impure containing sulphates, which increase the yield.
- The measurements taken are wrong.
- In this case, sulfuric acid is the limiting reagent, thus, the theoretical quantity (gram equivalents) of alum produced would be equal to the equivalents of sulfuric acid. Addition of Al(OH)3 will not matter.
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Error Analysis Questions for Alum Synthesis Experiment 1. After collecting the alum product from the synthetic...
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During a "Synthesis of Alum" experiment, with 24.9mL of 1.4M KOH. After cooling the mixt Given the following balanced equation: OF Alum" experiment, a student uses 0.500g of aluminum foil and disson NOR. After cooling the mixture, the students adds 11.9mL of 9.OM H2SO4. 2 Al(s) + 2 KOH(aq) + 4 H,SO(aq) + 22 H200) — 3 H2(g) + 2 KAl(SO4)2-12 H20 a. Calculate the theoretical yield of alum. Show the process of finding the limiting reactant. [Molar Mass (Alum)...
Synthesis of Alum (Potassium Aluminum Sulfate) from Aluminum Aluminum cans can be recycled to make potassium aluminum sulfate dodecahydrate, KAK(SO)12H20, which is abbreviated to "alum". The 12 waters are part of the overall formula. Alum can be used to make dyes, printing fabrics, making paper, adhesives, pickling of food and vets use it to induce a dog to throw up. x 1 rxn 2 run 3 The following are the four reactions that lead to alum: Al(s) + 2 KOH...
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Experiment 7 Preparation of Alum PURPOSE oF EXPERIMENT: Prepare KAI(So,)2 12H20, an aluminum alum, from aluminum metal. (Note: ExPERIMENT 8 describes the gravimetric analysis of the sulfate content in alum.) Alums have the general formula MM(So) 12HO, where M* is commonly Na". K', Tl., NH,., or Ag, and Mt''is A广, Fe". Cr". Ti". or Co. . Samples of these compounds have a variety of uses in our everyday lives. Sodium...
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i need help with the postlab questions please
Grignard reagent THE GRIGNARD REAGENT-PREPARATION AND REACTION In this experiment, you will prepare a Grignard reagent, phenyl magnesium bromide, from bromobenzene and magnesium metal. The Grignard reagent will then react with methyl benzoate to form triphenylmethanol. Introduction Grignard reagents, such as organomagnesium halides, were discovered in 1910 by French chemist Victor Grignard. The Grignard reaction is one of the most general methods for carbon- carbon bond formation in all of organic chemistry....
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