1. (a) Write the chemical equation indicating the stepwise displacement of coordinated H20 by NH3 for the following reaction. [Ni(H20)6]?* + XNH3 -> [Ni(H2O)6-x (NH3)x]²"(aq) + X2H2O (b) The log Kn values for the reaction are given in the table below. Comment on the trend.

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