In the adsorption of N2 at 90.1 K on a certain solid, the following volumes of gas, reduced to standard condition, were found to be adsorbed per gram of the solid at the indicated relative pressures. Determine: a) the BET constants b) E1 and EL c) identify the type of isotherm P/po V, cm3 0.05 0.10 0.15 0.20 0.25 51.3 58.8 64.0 68.9 74.2

In the adsorption of N2 at 90.1 K on a certain solid, the following volumes of gas, reduced to standard condition, were found to be adsorbed per gram of the solid at the indicated relative pressures. Determine: a) the BET constants b) E1 and EL c) identify the type of isotherm P/po V, cm3 0.05 0.10 0.15 0.20 0.25 51.3 58.8 64.0 68.9 74.2

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

In this table the Kr volume adsorbed on an active carbon surface are given, as a function of the pressures, at 193.5 K. a) Does this data fit well to a Langmuir isotherm? If yes, determine vm and b.
Nitrogen gas adsorbed on charcoal to the extent of 0.921 cm3 g−1 at 490 kPa and 190 K, but at 250 K the same amount of adsorption was achieved only when the pressure was increased to 3.2 MPa. What is the enthalpy of adsorption of nitrogen on charcoal? Hint: See the hint for Exercise E19B.5(a).
The adsorption equilibrium isotherm for aqueous phenol solution and activated carbon can be determined from the following data: c kg phenol/m3 solution q kg phenol/kg carbon 0.3220 0.150 0.1170 0.122 0.0390 0.094 0.0061 0.059 0.0011 0.045 Determine the appropriate isotherm for this experimental run
The following data was obtained for the adsorption of an organic compound (S), on activated carbon from an aqueous solution of molar concentration Co, at 18 °C: Data: Molecular weight of S: 58 g/molWhich isotherm best represents the data: Langmuir, Freundlich, or BET?
For the adsorption of a substance A from aqueous solution by charcoal at 25C, the Freundlich constants are n = 3.0 and k = 0.50 for y in grams per gram and C in g L-1. What weight of A will be adsorbed by 2 g of charcoal from 1 L of a solution containing originally 2 g of substance? Answer is [1 g]
The average time for which an oxygen atom remains adsorbed to a tungsten surface is 0.36 s at 2548 K and 3.49 s at 2362 K. What is the activation energy for desorption?
The volume of O2(g) adsorbed on a surface of 1 g of a silica sample at 5°C is V1=1.4 cm3 at P1=95.1 torr and V2=10.6 cm3 at P2=760 torr. Identify the maximum volume of oxygen, Vm, that can be adsorbed. Consider the Langmuir isotherm model
A monolayer of N2 molecules is adsorbed on the surface of 1.00 g of an Fe/Al2O3 catalyst at 77 K, the boiling point of liquid nitrogen. Upon warming, the nitrogen occupies 3.86 cm3 at 0 °C and 760 Torr. What is the surface area of the catalyst? Use the value of the collision cross-section for N2 (from the Resource section) as an estimate for the area of a molecule.
The following data were obtained for the adsorption of acetone on charcoal from an aqueous solution at 180C. Y (millimoles/g) C (millimoles/liter) 0.208 2.34 0.618 14.65 1.075 41.03 1.5 88.62 2.08 177.69 2.88 268.97 a) Find the constants k and n of the Freundlich equation. b) Find the constants a and b in the Langmuir equation. c) Find the constants k and n in the Temkin isotherm. d) Which of the isotherm fit the data best? Answer letter D only thank you!
What is the difference between effect of pH and Point of zero charge with regards to Adsorption
The enthalpy of adsorption of ammonia on a nickel surface is found to be −155 kJ mol−1. Estimate the mean lifetime of an NH3 molecule on the surface at 500 K; assume τ0 = 1.0 × 10−14 s.
Calculate the isosteric enthalpy of adsorption from the following results which were obtained for the adsorption of 0.145 cm3, at STP, of nitrogen on charcoal: Temperature (K) Pressure (kPa) 195 156 244 380 273 567 Answer is [-7.53 kj/mol]