Redox decomposition of trans-tetra-ammineaquosulphitocobalt(III) in aqueous solution

Thermodynamics for the hydrogenation of dimanganese decacarbonyl

“…The latter peak indicates the presence of fro/w-(NH3)4Co(OH2)S03+ formed by the rapid substitution of the ammonia trans to the sulfilo group. 6 The sulfitopentaamminecobalt(III) cation, however, persists in 0.10 M NH3(aq) and gives a visible maximum at 456 nm (« = 150 M-1 cm-1). If a solution of the sulfilo complex in 0.10 M NH3(aq) is mixed with 1.0 M HC104(aq) on a stopped-flow instrument, the formation of the trans-substituted complex is complete in approximately 2 min.…”

Chemistry of Multiphase Atmospheric Systems

“…Hoffmann and Jacob [54]). Furthermore, in wetted aerosol particles these metal compounds can be concentrated in solutions of several molal since the amount of liquid water in such particles is about three to five orders of magnitude lower than in fog or cloud droplets (Ho et ale [55]).…”

“…24,[54][55][56][57] Van den Heuval, A.P., andMason, B.J., 1963: The formation of ammonium sulfate in water droplets exposed to gaseous sulfur dioxide and ammonia. Radke, L.F., 1970: Field and laboratory measurements with an improved automatic cloud condensation nucleus chamber.…”

Kinetics of the uninhibited and ethanol-inhibited CoO, Co2O3 and Ni2O3 catalyzed autoxidation of sulfur(IV) in alkaline medium

“…In acid medium, Co(II) is resistant to oxidation by O 2 , but the alkaline medium is known to facilitate its oxidation [36] due to change in redox potential [37]. Cobalt(III) is known to oxidize S(IV) into S(V) [38] and Co(II) is known to reduce O 2 to superoxide ion [36] which appears to facilitate the oneelectron transfer radical mechanism in alkaline medium.…”

“…On comparing the experimental and derived rate laws (6) and (38), respectively, we get A = k 1 k 6 /k 7 [X]. At pH 8.20, using the estimated values of k 7 [X], experimental values of A and reported value of k 6 (5.5 9 10 8 L mol -1 s -1 , 25°C), the values of k 1 were calculated ( Table 1).…”