Consider the coordination of Cu2+ by the tridentate iminodiacetate ligand, HN(CH

Question

Consider the coordination of Cu2+ by the tridentate iminodiacetate ligand, HN(CH2CO2-)2, abbreviated A2-. When the monoprotonated form, H2N(CH2CO2-)2, abbreviated HA-, is added to an aqueous solution of Cu2+, the following equilibrium is rapidly established: ?Cu?^(2+)+HA?CuA+H^+ If a solution prepared by combining 100 mL of .2 M Cu2+ and 100 mL of .2 M HA- is adjusted to pH 1.6 with NaOH, what are the concentrations of Cu2+, HA-, and CuA in the solution? (The Ka for HA- is 4.70X10-10, and K1 for Cu2++A2-?CuA is 4.26X1010.

Explanation / Answer

FOLLOW THIS 1mol/dm3 is same as 1 mol/L CuSO4 (aq) --> Cu2+ (aq) + SO42-(aq) I Mol/L CuSO4 will ionize to give 1mol/L of Cu2+ ions therefore concentration of Cu2+ in 1mol/dm3 of CuSO4 is 1mol/dm3

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