The photochemistry of cis-L-Rh(en)/sub 2/(H/sub 2/O)(OH)/sup 2 +/ and cis-L-Rh(en)/sub 2/(OH)/sub 2//sup +/ in aqueous solution is reported. Irradiation at 313 nm results in a photoracemization quantum yield of 0.05 +/- 0.01 and 0.008 +/- 0.002 mol/einstein, respectively. The results of this work and previous studies on the photochemistry of cis- and trans-Rh(en)/sub 2/(OH)X/sup n+/ (X = OH, H/sub 2/O) and cis- and trans-Rh(en)/sub 2/(H/sub 2/O)/sub 2//sup 3 +/ are consistent with a photochemistry mechanism involving excitation, ligand labilization, rearrangement of an excited-state, five-coordinate fragment, relaxation, and solvent addition. Ratios of the photochemical quantum yields for cis-L to cis-rac and cis to trans conversions agree with the conclusion that Rh(en)/sub 2/(OH)/sup 2 +/* is the species undergoing rearrangement in both the dihydroxo and aquo hydroxo systems. 24 references, 2 tables.