J.R. S. answered • 10/21/20
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Write the correctly balanced equation:
Cu(NO3)2(aq) + 2NaOH(aq) ==> Cu(OH)2(s) + 2NaNO3(aq) ... balanced equation
...xs..................30ml x 3 M.............?........... ASSUMING EXCESS Cu(NO3)2........
moles NaOH present = 30 ml x 1 L/1000 ml x 3 mol/L = 0.09 moles NaOH
theoretical yield of Cu(OH)2 = 0.09 mol NaOH x 1 mol Cu(OH)2 / 2 mol NaOH x 97.6 g Cu(OH)2/mol = 4.39 g Cu(OH)2 = 4 g Cu(OH)2 (1 sig. fig. based on 30 ml having only 1 sig. fig.)
