Sulfur plot, concentration versus

Wastewater Treatment by Electrogeneration of Strong Oxidants Using Borondoped Diamond (BDD), Fig. 1 Plot of current efficiency versus sulfuric acid concentration, C, for electrolysis using a boron-doped diamond electrode, i = 23°mA°cm , T = 9°C. [5]... 

In industrial production of acid-modified starches, a 40% slurry of normal com starch or waxy maize starch is acidified with hydrochloric or sulfuric acid at 25—55°C. Reaction time is controlled by measuring loss of viscosity and may vary from 6 to 24 hs. For product reproducibiUty, it is necessary to strictly control the type of starch, its concentration, the type of acid and its concentration, the temperature, and time of reaction. Viscosity is plotted versus time, and when the desired amount of thinning is attained the mixture is neutralized with soda ash or dilute sodium hydroxide. The acid-modified starch is then filtered and dried. If the starch is washed with a nonaqueous solvent (89), gelling time is reduced, but such drying is seldom used. Acid treatment may be used in conjunction with preparation of starch ethers (90), cationic starches, or cross-linked starches. Acid treatment of 34 different rice starches has been reported (91), as well as acidic hydrolysis of wheat and com starches followed by hydroxypropylation for the purpose of preparing thin-hoiling and nongelling adhesives (92). 

The results on the influence of the impinging distance are shown in Fig. 7.17 as a plot of 77s versus the dimensionless impinging distance, S/d(). In the range tested the sulfur-removal efficiency decreases continuously as S/d() reduces. The most likely reason is that at smaller impinging distance the concentration of droplets in the impingement zone increases, giving enhanced collision between droplets and an increased tendency of the droplets to coalescence, thus reducing the interface area. On... 

Let the vials stand at room temperature for 45 min, then determine the absorbance of each sample at 490 nm in a suitable spectrophotometer, using a Phenol Solution-sulfuric acid reagent blank in the reference cell. Plot mean absorbance values versus concentrations, in micrograms per milliliter, obtained from triplicate samples. 

For each of the following materials of construction, prepare an approximate plot of temperature versus concentration in water for sulfuric acid and for nitric acid, showing conditions of generally acceptable corrosion resistance ... 

Figure 20 Progress of intramolecular sulfurization of malabaricatriene (I) with depth in anoxic Cariaco basin sediments. Plot of the ratio of the concentrations of I to the sum of the concentrations of I + V (see Figure 19 for structures) as a function of sediment depth. The progress of transformation of I-V with increasing sediment depth is indicated by the steady decrease in the relative abundance of the precursor lipid (I). Inset plot of In ([ ]/([ ] + [V])) versus sediment age (= time), used to empirically determine the first-order rate constant for sulfur incorporation...

FIGURE 1.9 Plot of )sp/c versus c for the sodium salt of partially sulfuric acid-esterified sodium polyvinyl alcohol (degree of substitution a = 0.31, and degree of polymerization = 2500) in water with added molar concentrations of NaCl as indicated. (Adapted from Nishidaetal. [2002].)... 

The kinetics of the polymerization of pyrrole can be followed by measuring the disappearance of the reactants. Pyrrole concentrations can be determined by gas chromatography [10]. The depletion of iron can be followed by the titration of the iron(III) chloride with a complexing agent, and the disappearance of the sulfur-containing doping agents can be determined by inductively coupled plasma (ICP) [47]. Experiments reveal that the reaction follows second-order autocatalytic kinetics [ 10]. A plot of the concentrations of pyrrole monomer (surface and no surface) versus time at room temperature is shown in Fig. 35.5. The surface resistance of the polypyrrole-coated textiles can be controlled by... 

Indeed, PBA and PPTA, which are soluble in concentrated sulfuric acid, display simple lyotropic behavior, closely obeying the simple relation (2). Figure 3 shows a plot of the minimum polymer concentration for the onset of the formation of an anisotropic, liquid crystalline phase versus the inherent viscosity of PPTA. The data in Figure 3, taken from ref. 3, reveal the systematic, inverse relation between the minimum concentration and the polymer viscosity. The latter quantity scales with the molecular weight M approximately as M l+ (12). The ordered phase of the present lyotropic aramids is nematic, and consist of arrays of approximately parallel chains, presumably without regular arrangement of the end groups or chain units. 

Figure 6.5 Plot of the speed of sound versus sulfuric acid H2S04(f) concentration. This relationship can be used to determined sulfuric acid H2S04(f) concentration (Weerstra, 2012).

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