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What is an adsorption isotherm? Describe Freundlich adsorption isotherm.

Chemistry for Engineering Students

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ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter12: Chemical Equilibrium

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Problem 12.1PAE: Identify the first chemical step in the production of Portland cement. How is this reaction related...

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Identify the first chemical step in the production of Portland cement. How is this reaction related to the chemistry that takes place in the carbonation of concrete?
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.
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Q 6(b) The adsorption isotherms for two test material, A and B, were generated to determine which material would be the most suitable as a sorbent material. Material A generated a Type I isotherm whereas material B gencerated a Type II isotherm. i. What are Type I and Type II isotherms? What material would you expect to be the most suitable as a sorbent material? Why? ii.
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The following data were obtained for the adsorption of a certain material (ORA) on activated carbon at 25 °C. Sample number [ORA) initial (M) [ORA] at equilibrium Activated carbon mass (M) (g) 1.0119 0.0096 0.0044 1 2 1.0186 1.0360 0.0289 0.0578 0.0207 3 0.0446 4 1.0129 0.0867 0.0721 1.0393 1.0312 0.1002 0.1270 0.1742 0.1156 6. 0.1445 7 1.0198 0.1926 8 1.0270 1.0252 0.2407 0.2227 0.2889 0.1108 4. If a monolayer of N2 molecules is 0.03075 mole per one gram of activated carbon, and the surface area on one N2 molecules is 0.162 nm2, determine: a. surface area per one gram of activated carbon b. surface area of one ORA molecule

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