Baker, Newton

Baker, Newton D., 85, 129 Barbital, 58, 211. See also Veronal Barrett, William F., 279 Barrett Company, 34-35, 65-66, 252 Baruch, Bernard, 183-84... 

There are a number of studies that have obtained data for the second stepwise stability constant of cerium(IV) at 25 "C and in perchloric acid media, that is, for the formation of Ce(OH)2 from CeOH (Sherrill, King and Spooner, 1943 Baker, Newton and Kahn, 1960 Offner and Skoog, 1966 Everett and Skoog, 1971). The stepwise stability constant determined for zero ionic strength is given in Section 8.4.3. This constant can be combined with the first stepwise constant given earlier to determine a stability constant for reaction (2.5) M = Ce, p= 1, q = 2). The constant derived is... 

Both sulphate and chloride ions were found to accelerate the reaction under constant ionic strength conditions and, although medium effects may operate, pathways involving chloride and sulphate ions are possible. For the sulphate ion addition Newton and Baker conclude that the step... 

Newton and Baker, using wavelengths of 737 m/i or 648 m/i (U(IV) absorption), have obtained similar overall rate coefficients to those obtained by polaro-graphy . However, they have found U(VI) to retard the disproportionation reaction due to the presence of an additional process... 

Love et have examined the oxidation of U(IV) by Tl(III) in the presence of tartaric acid. The kinetics are complex tartaric acid increases the initial rate but, in its presence, reaction ceases before all the Tl(III) is consumed. The disagreement between the rate coefficients of Love et al. and those of Harkness and Halpern is ascribed to the presence of Fe(III) impurities in Tl(IIl) stock solutions. However, as pointed out by Newton and Baker °, this explanation cannot be valid since the results of Harkness and Halpern are not dependent on the initial reactant concentrations. 

The rate laws reported by Wear have been criticised by Newton and Baker ... 

The redox reactions of the actinide elements have been the subject of a recent and authoritative review by Newton and Baker . The net activation process concept is used to interpret the experimental data. Empirical correlations shown to exist include those between the entropies of the activated complexes and their charges, and, for a set of similar reactions, between AG and AG , and and A/f . The present state of the evidence for binuclear species is discussed. 

The chloride-ion dependence indicates the importance of two activated complexes, (PuOjSnCls y and (Pu02SnCl4), with AH values of 14.0 and 14.6 kcal.mole and AS" values of 4.4+7 and 8.0+5.5 cal.deg . mole respectively (as recalculated by Newton and Baker °). In terms of the apparent rate coefficient, k ... 

Newton, D.E. and L,W. Baker Chemical Elements From Carbon to Krypton. Vol. 

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