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The cation M2+reacts with NH3to form a series of complex ions as follows: M2+ + NH3M(NH3)2+...

The cation M2+reacts with NH3to form a series of complex ions as follows:

M2+ + NH3M(NH3)2+

K1= 102

M(NH3)2++ NH3M(NH3)22+

K2= 103

A 1.0 × 10–3mol sample of M(NO3)2is added to 1.0 L of 15.0 MNH3.  Find concentrationof NH3, M(NH3)2+ and M(NH3)22+ion in solution.

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