Based on the given graph calculate the extent of adsorption at 5 atm. The intercept is 0.702. Calculate the quantity of an adsorbate that is adsorbed per unit mass of the adsorbent. Log (x/m) پے Log (p)
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- What is an adsorption isotherm? Describe Freundlich adsorption isotherm.The adsorption of a certain substance, X, follows a Langmuir isotherm. Saturation coverage of the materials is 8 × 10-¹0 mol/cm² and 3 = 5 × 107 cm³/mol (assuming a₁ = C₁). At what concentration of X will the electrode surface be half covered (i.e., = 0.5)? Sketch the adsorption isotherm of the substance.7.5 micromoles ( u mol) of carbon dioxide are adsorbed onto a 1.0 gram sample of activated carbon. How many milligrams of CO2 were adsorbed?
- 4. Calculate the value of adsorption of water solution of caproic acid (C,HCOOH) at 15°C, if its concentration is 0.25 mole/l, surface tension of the solution is equal to 35-10 N/m, surface tension of water is equal to 73.4-10 N/m..A plot of a Langmuir adsorption isotherm (C/q vs 1/Q) for an adsorption process, gives a slope of 0.208 and intercept of 250. Calculate the adsorption capacity at equilibrium corresponding to monolayer coverage (0) A) 0.002 B) 4.8 C) 52 D) 1.2 x 10¹а. Identify THREE (3) isotherm shapes that are typically encountered in an adsorption process for a single adsorbate and illustrate the behavior through equilibrium relations.
- 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.Write two applications of adsorption.Suppose you have dipped a chalk stick in blue-ink solution, which of the following phenomenon do you expect to happen? And why? Adsorption of colored substance and absorption of solvent Adsorption of solvent Absorption and adsorption of solvent Absorption of colored substance and adsorption of solvent
- The enthalpy of adsorption of NH3 on Cu metal is found to be -200kJ/mole. The lifetime of NH3 molecule on Cu metal surface at 600K is? 200 s 2583 s 3.87x10^-32 s 40x10^-14 sWhat are all the possible ways activated carbon can be modified in its adsorption capacity?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?