Based on the amounts of copper metal and nitric acid you used in the first reaction, claculatethe numbe rof moles of HNO3 tht are in excess. Concentrated sitric acid has a concentration of 15.8 M.
Weight of Copper: 1.089g
Volume of Added Nitric Acid: 5.7 mL
Total weight of added Sodium Carbonate: 3.938 g
Weight of watch glass and filer paper: 52g
Weight of watch glass, filte rpaper, and precipitate: 53.945g
Experimental yield of CuCl: 1.945g
Theoretical yield of CuCl: 1.697 g
Percent yeild: 114.614 %
1) Based on the amounts of copper metal and nitric acid you used in the first reaction, claculatethe numbe rof moles of HNO3 tht are in excess. Concentrated sitric acid has a concentration of 15.8 M.
2) Using moled of HNO3 you calculated and the mole sof Cu(NO3)2 produced from the first reaction, calculate the total mass of sodium carbonate needed fro the second and third reactions. Did you add enough sodim carbonate in the experiment?
3) What observation suggests that copper was added in excess during the last reaction?
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