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Experiments with Chlorine

In our previous experience with chlorine [4], for which the ground state valence configuration is the same as that in Ar II, 3s 3p, we found that all the excited configurations in which one of the 3p electrons is promoted to an upper n p or n d ( > 3) state comply with the LS scheme. This was valid for two different states of the core, the ground, P, and the excited D states. The same has been found to occur in Ar 11. However, in some of the states where one 3p electron is promoted to an orbital with higher n and / quantum numbers the levels showed a clear JJ structure. We observed that for a given value of / this was more obvious the higher the principal quantum... [Pg.280]

Blank Experiment with Chlorine. This experiment was designed to provide information regarding the effect of chlorine on the production of new chlorinated compounds. Duplicate blank experi-... [Pg.529]

Hydroxylation of alkanes preferentially occurs at the more nucleophilic C—H bonds, with a relatively low isotope effect (fcH/fcD = 2.8 for cyclohexane) and a significant amount of epimerization at the hydroxylated carbon atom. Radical carbon intermediates were revealed in this reaction by trapping experiments with chlorine atoms coming from CC14. [Pg.333]

The human experience with chlorine dioxide, both in controlled prospective studies and in actual use situations in community water supplies, has failed to reveal adverse health effects. However, glucose-6-phosphati dehydrogenase-deficient individuals and... [Pg.556]

Preparation of Oxygen — Breaking Glass Tubing — Catalytic Agents—Experiments with Oxygen—Production of Chlorine —Experiments with Chlorine—Neutralization—Distillation of Water — Practical Distillation — Thermit —A Small Electric... [Pg.2]

Two contrasting results may be instructive. Experiments with chlorinated benzenes in which the effect of substrate concentration was examined in batch cultures and in recirculating fermentors showed that although substrates could be degraded completely in the former, a residual concentration of the substrate persisted in the latter (van der Meer et al. 1992). On the other hand, experiments using Burkholderia sp. strain PS14 failed to detect residual concentrations >0.5 nM after mineralization of 1,2,4,5-tetra- and 1,2,4-trichlorobenzene at concentrations of 500 nM (Rapp and Timmis 1999). These results are highly relevant in the context of bioremediation (Chapter 8, Section 8.1.2). [Pg.330]

In the event, it was engineers laying a new sewage system rather than Faraday s experiments with chlorine that brought improvement. Chemical industry has since acquired a reputation for polluting, and the pharmaceutical industry for profiteering. [Pg.132]

With different gases, under the same conditions, any difference in the value of vnJvQ must be due to the different densities of the gases. The mean of a series of experiments with chlorine (density, 35 5), carbon dioxide (density, 22), and ozone (density, ), gave the following for the value of this ratio — C02, 0 29 Ozone, 0 271 Cl2, 0 227. [Pg.200]

Bulk polymerization of vinylene carbonate (VCA) initiated by 60Co y-rays was studied at 30°-110°C at a constant dose rate of 1 - 105 rad/hr. An overall activation energy of 5.0 kcal/mole and a maximum reaction rate of 1 10 3 mole/l-sec were obtained. As has been reported, purification of the monomer is a crucial point because inhibiting impurities are formed during the synthesis. From experiments with chlorine-substituted ethylene and vinylene carbonates, we tentatively conclude that, in addition to mono- and dichloroethylene carbonate, dichloro-vinylene carbonate is mainly responsible for the inhibition. The copolymerization behavior of VC A with some chlorine-substituted olefins was studied. Chlorotrifluoroethylene (CTFE) is an especially suitable comonomer the reactivity ratios found were rVCA = 0.42 and rCXFE = 0.48. [Pg.107]

The expressions (6)-(21) were used to calculate concentrations of NOM and arsenic in the overall volume of groundwater in the experiments with chlorinated and non-chlorinated water, amounts of NOM and arsenic in the effluent during the experiment, as well as the amounts of NOM and arsenic adsorbed on the SBIX. Total amounts of NOM and As that passed through the resin as well as amounts that charged the resin are presented in Table 3. [Pg.94]

Interestingly, practically all studies on disinfection of biofilms focus on already existing biofilms and not on their prevention. Biocides can be effective in prevention of biofilm formation, as practical experience with chlorine in swimming pools proves. This aspect has not been well covered scientifically. [Pg.115]


See other pages where Experiments with Chlorine is mentioned: [Pg.2]    [Pg.212]    [Pg.21]    [Pg.430]    [Pg.285]    [Pg.341]    [Pg.430]    [Pg.341]    [Pg.419]    [Pg.20]    [Pg.21]    [Pg.271]    [Pg.836]    [Pg.78]    [Pg.79]    [Pg.89]    [Pg.6486]    [Pg.96]    [Pg.836]   


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