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Chloroplatinic acid, H2PtCl6, a weak diprotic acid, is used as a precursor to synthesizing Pt nanoparticles. Which of the following reactions corresponds to the dissociation of the first proton of H2PtCl6 in aqueous solutions? a. H2PtCl6(aq)+.2H2O(I)PtCl62(aq)+.2H3O+(aq. b. H2PtCl6(aq)+.H2O(I)H3PtCl6+(aq)+.OH(aq. c. H2PtCl6(aq)+.H2O(l)HPtCl6(aq)+.H3O+(aq. d. HPtCl6(aq)+.H2O(I)PtCl62(aq)+.H3O+(a