3. Use Fig. 1.5-1 to find the viscosity, expressed in mPa·s, of chloroform (CHC13) at 1207 °C and 108 atm. Use the following values for the critical constants: Tc = 536.6 K, Pc = 54.0 atm, V240 cm³/mol. 20 20 10 Liquid 8 1967 6 5 4 Reduced viscosity µ, µ/H 2 Dense gas P Pr= Pe 25 10 Two-phase region 5 1.0 2. 0.9 Critical 0.8 point 0.7 0.6 0.5 0.5 Low density limit 0.4 p=0.2 0.3 0.2 0.4 0.5 0.6 0.8 1.0 2 3 4 5 6 8 10 Reduced temperature T, = T/T, Fig. 1.5-1. Reduced viscosity H, H/H, as a function of reduced temperature for several values of the reduced pressure. [O. A. Uyehara and K. M. Watson, Nat. Petroleum News, Tech. Section, 36, 764 (Oct. 4, 1944); revised by K. M. Watson (1960). A large-scale version of this graph is available in O. A. Hougen, K. M. Watson, and R. A. Ragatz, C. P. P. Charts, Wiley, New York, 2nd edition (1960).]