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A solution of 350 mL of 0.0470M Cu(NO3)2 are mixed with 1.2 L of 0.8 M...

A solution of 350 mL of 0.0470M Cu(NO3)2 are mixed with 1.2 L of 0.8 M Na2X, where X– represents an unknown ion, acts as a ligand to form a complex ion with the Cu2+ ion with a coordination number of two.

   a) Calculate the equilibrium constant for the following formation.

       Cu2+ + 2X2–arrow.png [Cu(X)2]2–

    Cu2+ + X2–arrow.png CuX                  K1 = 1.96 × 104
    [Cu(X)2] 2–arrow.png CuX + X2–             K2 = 3.88 × 10–2

b) Hence, calculate the equilibrium concentration of the Cu2+ ion.

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Answer #1

After mixing the solutia, Initial concentration total volume - 0.35L+ 1.22 is changed Eu 2+] = = 1.55L 0.047x0.35 0.0106M 1.5

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