Absorption factor is defined as (where, S1 = slope of the operating line S2 = slope of the equilibrium curve) ____________________? August 22, 2021February 17, 2019 by admin Absorption factor is defined as (where, S1 = slope of the operating line S2 = slope of the equilibrium curve) ____________________? A. S2/S1B. S1/S2 C. S1 – S2 D. S1 × S2