Okay Mass transfer problem how to find Diffusivity Coefficient. Ans must be in M^2/s and I need the formulas not just the solutions please explain thoroughly.

DAB0=vA0.61.1731016(MB)1/2T Here DAB0 is the diffusivity of the solute A in solvent B in m2/s; the superscript ' 0 ' refers to an infinitely dilute solution. The different quantities involved are: MB= molecular weight of B (the solvent); = association factor for the solvent [water: =2.26; methanol: =1.5; ethanol: =1.5; non-associated solvents: =1.0; T= absolute temperature, in K;= solution viscosity, in kg/ms;vA= solute molar volume at the normal boiling point, in m3/kmol. Let us estimate the diffusivity of acetic acid(A) in water (B) using the Wilke-Chang equation at 293K. Molar volume of the solute (acetic acid) at its normal boiling point, vA=0.0641m3/kmol (Poling et al., p. 54); viscosity of the solvent (water) at 293K (Poling et al., p. 441), = 1.0121103kg/ms;=2.26 for water, MB=18. Substituting the values of different quantities in Eq. (2.66), DAB=1.116105cm2/s. This value would be a little larger at 298K. asins this Equation 1 know QI/