Vs. concentration and

Experimentally we can determine the values of % at various values of Cj. Then we construct a plot of the left-hand side of Eq. (7.24) vs. concentration and extrapolate it to zero concentration [i.e., into the region of ideal solutions where ln/+ = 0 (Eig. 7.3)]. We thus determine the value of Knowing this, we can readily find the values of/+ for any solution concentration investigated when using Eq. (7.24). 

Create the standard curve, using the procedure practiced in Experiment 18, by plotting absorbance vs. concentration and obtain the concentration of the unknowns and control. 

Create the standard curve, using the procedure practiced in Experiment 18, by plotting absorbance vs. concentration and determine the concentration of the unknown and control. Multiply the concentrations by 25 to get the parts per milhon Na in the soda pop. Also calculate the milligrams of sodium in one 12-oz can of the soda pop. 

Prepare a carboxymethylcellulose solution as in Part A. Prepare dilutions to bracket the suspected concentration in the unknown. Measure the viscosities of the solutions and the sample with a rotational viscometer and in a constant temperature bath set at 25°C. Plot viscosity vs. concentration and determine the concentration in the unknown. 

The dimer formation rate k was determined by fitting the TG signal at various concentrations using (8.7). The rate constant k decreased as the concentration decreased. From the slope of the plot of k vs. concentration and the relation k = Ay AppA, we determined the second-order rate constant Ay to be 2.5 x 105 M 1 s 1. Interestingly, this value is much smaller than that of a diffusion-controlled reaction ( T09 M 1 s 1) calculated by the Smolochowski-Einstein equation for a bimolecular reaction in solution [55]. This difference indicated that the collision between two protein molecules is not the sole criterion for the aggregation process i.e., their relative orientations dictate additional constraints, which slow down the rate of the reaction by 4 orders of magnitude. 

Since discontinuities at the c.m.c. occur in curves of surface tensions vs. concentration and of either cos 0 vs. concentration or cos 6 vs. surface tension, the generalization is proposed that micelle-forming compounds will produce discontinuities in the slopes of other surface properties of surface active agents when plotted against either the concentration or the surface tension of the solution. For example, it may be that such will occur in plots of the interfacial tension vs. the concentration of the surface active solute in the aqueous phase. 

According to the main postulate of the chemical kinetics, correlation of complex reaction rate vs. concentration and order is subjected to the following equation... 

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