117. Solving a chemistry problem

117. Solving a chemistry problem

609. Determine the molar mass and aggregation number of micelles of dodecylammonium chloride C12H25NH3Cl (the number of surfactant molecules in one micelle) in dilute aqueous solutions at 30 ° C according to the following turbidity data:
s, g/l 5.61 6.80 8.00 9.07 9.27 10.27 11.88 14.28 16.48
τ*103, m-1 24.18 31.42 38.70 40.08 40.89 43.03 45.17 48.60 51.31

It is known that the CMC is 3.23 g/l, the turbidity of the solution at CMC is 5.37*10-3 m-1. Other data: light wavelength 436 nm, light refractive index in solvent 1.3320, refractive index increment Δn/Δс = 0.161 cm3/g.

Additional information:

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.