"LANGMUIR ADSORPTION ISOTHERM, SOLID ADSORBENT and GASEOUS ADSORBATE, B AND V∞, NONLINEAR REGRESSION. Θ is the fraction of the surface of asolid absorbate (like charcoal) that is covered (by a monolayer) of a gaseous adsorbate (like carbon monoxide) at a pressure P (in mmHg or torr). V is the volume of gas (in cm^3 or ml) per unit mass (grams) of the solid absorbate measure at STP. V∞ is the constant volume which results in total coverage (Θ=1).The contants B and V∞ characterize the adsorption and can be determined by fitting the LANGMUIR ADSORPTION ISOTHERM to the experimental data. In this case experimental data are V (in ml/g) vs. P (in torr). *** Answer(s) to Problem(s) **** (c) Copyright PCSCC, Inc., 1993The equations and data are included. The total squared error between the active dependent variable V (or response) and the V values of the 7 data points with each of the 7 data coordinates or P values substituted into the coordinate P variable (or predictor) is minimized. Equation Θ is inactive (no '='). P is coordinate (':'). To solve, type S. Use default tolerance, type (enter). B = 9.62e-4 and V∞ = 37.70. Type any key to exit. ||Calculate B and V∞ for the adsorption of CO on charcoal using the Langmuir model. Data in (P,V) pairs are: (100,3.38), (200,6.15), (300,8.44),(400,10.39), (500, 12.21), (600, 13.77) and (700,15.25) (from Atkins, P.W., Physical Chemistry, Oxford Press, Oxford, 1978). Type comma key to see entire comment. Type (F2) to return to application file."
