8.2. ISolubility at equilibrium~平衡溶解度 (2)Affection of pressure 实验证明 When p is less than5atm,o the affection may be neglected by 60℃ pressure on the equilibria for system. Commonly the pressure in3 602 50t the system of absorption operation 40 <5 atm. Then xA=f(pA) or pA= f(xA)如Fig.8-3,atT=30℃, 0.050 0.150.2 pa=20 kPa, XA=0.12 液相中氨的摩尔分数x pa=40 KPa, XA =0.19. 图8-3氨在水中的平衡溶解度 即:pA愈高,愈有利于吸收。⑵Affection of pressure 实验证明:When P is less than 5 atm, the affection may be neglected by pressure on the equilibria for system. Commonly the pressure in the system of absorption operation < 5 atm. Then xA* = f (pA) or pA*= f (xA) 如 Fig. 8-3，at T=30℃, pA=20 kPa, xA*= 0.12； pA=40 kPa, xA*= 0.19. 即：pA愈高，愈有利于吸收。 8.2.1Solubility at equilibrium ～平衡溶解度