. What is the role of phosphoric acid in the reaction carried out in this experiment? reactant catalyst product

1) With what observations can we understand that a reaction has taken place? 2) How is BaSO4 prepared in the laboratory? Which reagents do you prefer to use? 3) Classify the following reactions (write type): a) 2S + 3 O2 2SO3 __________ b) KC1O3 KC1 + 3/2 O2 __________ c) 2 Al + 6 HC1 2 AlCl3 + 3 H2 __________ d) 2 KOH + CaC12 Ca (OH) 2 + 2 KC1 __________ 4) Give a chemical formula for the following. a) __________ dissolving KC1 but not AgCl b) dissolving CuCO3 but not BaSO4 __________ c) __________ that dissolves FeS as well as Ag2O d) dissolving MgO as well as Ba (OH) 2 __________ 5) Give a chemical formula for the following. a) __________ which precipitates with both KC1 and CuC12 b) __________ that precipitates with both NaCl and Na2CO3 c) Precipitating with AgNO3 but not with Cu (NO3) 2 __________ d) __________ which precipitates with CuC12 but not with KC1

Question #2 Next, using the reactant below, perform the reaction dehydration (note - you can perform the dehydration on any two alkyl carbons) 112 ○ OH cture for species. Lastly, perform the reaction "oxidation of alcohol" on the compound below HHH H-C-C-C-O-H I HHHal les (hint re three) Do NOT and all 5

Complete the following equations to show the products that form in each of the reactions we observed in the demonstration. Include states and balance in each equation. Ca + H2O --> Li + H2O --> Na + H2O --> K + H2O -->