RTD studies were carried out by Jagadeesh and Satyanarayana (IECIPDD = 11 520, 1972) in a tubular reactor (L = 1.21 m, 35 mm ID). A squirt of NaCl solution (5 N) was rapidly injected at the reactor entrance, and mixing cup measurements were taken at the exit. From the following results calculate the vessel dispersion number; also the fraction of reactor volume taken up by the baffles.

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t, sec 0-20 20-25 25-30 30-35 35-40 40-45 45-50 50-55 55-70 NaCl in sample 0 60 210 170 75 35 10 5 0 (v = 1300 ml/min)