(b) The hysteresis loop is characterised between lower and upper points given by A = p/pº = 0.45, V = 255 cm³ g ¹N2 (STP

[answerhappygod]

B The Hysteresis Loop Is Characterised Between Lower And Upper Points Given By A P Po 0 45 V 255 Cm G N2 Stp 1 (45.05 KiB) Viewed 43 times

(b) The hysteresis loop is characterised between lower and upper points given by A = p/pº = 0.45, V = 255 cm³ g ¹N2 (STP) and B = p/pº = 0.96, V = 315 cm³ g¹ N2 (STP) Determine; i. an estimate of the specific surface are of the sample (B point method) ii. the upper and lower values of the true pore radii iii. the total pore volume of the sample iv. an estimate of the density of the porous carbon sample (non-porous carbon black typically has a density p = 1.7 g cm³³) (16 marks) Data: For Liquid nitrogen o = 0.35 nm, Vm(1) = 34.7 cm³ mol¹, y = 8.85 mNm¹ Surface area of N₂ = 16.20 x 10-20 m² STP 0°C, 101325 Pa