146. Solving a chemistry problem

146. Solving a chemistry problem

10. When measuring the viscosity of polystyrene solutions in toluene using a viscometer, the following data were obtained:
 
Concentration C, g / dm 3 0 1 2 2.36 2.75 3.12
Time of solution outflow τ, s 102,3 115,6 141,4 153,4 167,5 182,2
 
Calculate the values of the specific and reduced viscosity of polymer solutions and plot the plot of ηd / C = f (C). Determine the intrinsic viscosity [η].