The following is data on CO adsorption by 2.964 g of charcoal at 0°C. Thepressure P is in mmHg, while x is the gas volume in cc, measured understandard conditions:xP737.518016.530925.154038.188252.3■ Determine the Freundlich adsorption isothermequation and calculate the value of constant n andk from this equation.■ If the measured gas pressure is 340 mmHg, whatvolume (cc) of CO gas is adsorbed by 1 g ofcharcoal?

Determining the Freundlich adsorption isotherm equation:The Freundlich adsorption isotherm is an…

Answered: The following is data on CO adsorption…

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter22: Surfaces

Section: Chapter Questions

Problem 22.47E

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Equations for the chemiluminescence determination of SO2 are given on page 383. Derive an expression for the relationship between the concentration of SO2 in a sample, the luminescence intensity, and the equilibrium constant for the first reaction.
Explain the relationship given by Freundlich in adsorption isotherm.
1. Reaction Rates Cupric Oxide is leached in an acidic solution which results in the formation of Cu" ions. The leaching was carried out at 25°C. The pH of the solution was monitored at different time periods. The following results were obtained. t (min) PH 0.086186 4. 0.173925 0.259637 8 0.346787 10 0.431798 20 0.853872 a. Determine the balanced chemical reaction for the dissolution of Cupric oxide b. Determine the reaction rate order of the leaching reaction and the value for the rate constant. c. Given the value of the frequency factor in the Arrhenius Equation, A is 73,722 compute for the Activation Energy of the reaction. d. At what temperature will the reaction be 10 times as fast?
2. The following table gives the values of the preferential adsorption (Qe) and respective equilibrium concentrations of the bulk solution (Ce) obtained during the measurement of adsorption of acetic acid from an aqueous solution on the charcoal: Ce (mol/L) Qe (mol/g-charcoal) 4.660 x 104 0.0181 0.8827 2.479 x 103 If you know that water is not adsorbed on the charcoal and that adsorption can be described by the Freundlich isotherm, calculate (a) both constants of Freundlich equation (b) mole amount of the acetic acid removed from 400 cm³ of solution by adsorption on 50 g ofcharcoal, if the concentration of equilibrium bulk solution was found to be 0.3 mol dm-³.
1. The following are data for the adsorption of Co on wood charcoal at 0°C. The pressure P is in the mmHg while x is the volume of gas in cc, measure at standard conditions absorbed by 2.964 g of charcoal. P, mmHg P.mmHg 73 7.5 540 38.1 180 16.5 882 52.3 309 25.1 Find the constant k and n of the Freundlich equation. Given:
a. Sketch and explain the differences between adsorption isotherms of nanoporous adsorbent and porous adsorbent.
Given the BET isotherm plot is y = 123.961 x — 1.181. The surface area of the activated carbon was determined as 85±7 m2 /g. What was the mass of their sample of activated carbon for the adsorption of N2 gas?
An adsorbent surface has N no.of adsorption sites out of which 'n' fraction of sites are occupied . Draw a plot showing relation between 'n' and pressure
Write two applications of adsorption.
Fatty acid-soap systems exhibit a minimum in surface tension as a function of pH. What causes the increase in surface tension with decrease in pH below the pH of minimum surface tension? O Increase in ionic repulsion in the adsorbed layer with decrease in pH reduces surfactant adsorption at the interface O Unionized fatty acid that is present in this region is less surface active O Increase in the level of acid soap with decrease in pH results in increase surface tension O Because of precipitation of unionized fatty acid in this region, the level of soluble surfactant decreases with decrease in pH
Using Freundlich adsorption isotherm calculate the extent of adsorption of a dye on activated carbon at 25°C, where k = 0.025, n = 0.5 and C = 0.04.
What are all the possible ways activated carbon can be modified in its adsorption capacity?

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