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The rate constant for water solvent exchange in [Cr(H2O)6]2* is > 108 s-1 whereas that of [Cr(H2O)6]3+ is 2.4 x 10-6 s-1. Use the

The rate constant for water solvent exchange in [Cr(H2O)6]2* is > 108 s-1 whereas that of [Cr(H2O)6]3+ is 2.4 x 10-6 s-1. Use the qualitative theory developed by Taube to explain why the rate constants for these two aqua complexes differ by a factor of 1014.

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