Anion test the solution was acidified with dilute

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Anion testThe solution was acidified with dilute hydrochloric acid (HCl) andthen a few drops of barium chloride (BaCl2) were added.Anion identificationA white precipitate formed, identifying the presence of the sulfate(SO42-) anion.Sample name and formulaThe unknown salt was identified as containing Zn2+cations andSO42-anions, therefore the name of the salt is zinc(II) sulfate,ZnSO4.Pre-Lab Questions for Practical 43
Read the instructions for Practical 4 and answer the following questions (with workings andcalculations).1) List the potential chemical hazards identified for the synthesis of potassium alum(KAl(SO4)212H2O).
2)How many milliliters of KOH 2.0 M would be required to react with (i.e.dissolve) 1.83 g of purealuminum?3 H2
3)How many grams of potassium alum could be produced from 1.83 g of aluminum?3 H2.
4)If 6.20 g of potassium alum are produced from 1.83 g of aluminum, what is the percent yield?
4
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Term
Spring
Professor
N/A
Tags
Chemistry, white precipitate, confirmatory test

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