51. Solving a chemistry problem

51. Solving a chemistry problem

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18. Using a rotational viscometer operating in the constant strain rate mode, the rheological characteristics of 20% aqueous graphite suspensions were obtained at various pH values of the dispersion medium:
Strain rate, , s–1 Stress P, N/m2 at pH
13 11 7 4 2
50 1.8 8.2 14.2 9.6 1.0
100 2.4 9.0 15.0 10.2 1.8
200 3.0 10.0 16.0 11.2 2.2
400 4.4 10.8 16.6 12.0 3.0
800 7.0 12.8 17.6 13.8 4.6
1200 9.6 15.0 18.8 16.0 6.6
Plot the flow curves, calculate the yield strength and plot its dependence on the pH of the suspension medium.

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  • Content type File
  • Content description 76,91 kB
  • Added to the site 28.01.2023
If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.

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