Why is adsorption always exothermic?

Q: (a) Discuss the assumption of Langmuir adsorption isotherm. Obtain an expression for the amount of…

A: Langmuir proposed Adsorption isotherm which explains the variation of Adsorption with respect to…

Q: Microstructure of a steel contain 100% coarse pearlite it carbon content is reported to be 0.65% is…

A: Given : Coarse pearlite mass percent = 100 % And mass percent of carbon i.e carbon content = 0.65 %…

Q: (c) State the assumptions and limitations of Langmuir's Adsorption equation for a gas on solid.

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Q: How can we measure the mass-transfer efficiency in packed towers?

A: The area where the access is restricted there is the use of a packed tower which is used in small…

Q: Surface adsorption is a common form of contamination during precipitation process, where a layer of…

A: There are two types of adsorption namely phsical adsorption( physisorption) and chemical…

Q: Arrange the gases CO, N2 and CH4 in increasing order of adsorption on the surface of charcoal in a…

A: Adsorption is a surface phenomenon in which a solid substance holds other substance that can be…

Q: Spin transistor. a the origin of Polarity of magnetoresistance in graphene interlayer

A: In this question we have to tell that the origine of polarity of Magnetoresistance in graphene…

Q: What is the distinction between matrix and dispersed phases in a composite material?

A: a composite is formed with a continuous phase called the matrix. As shown in the figure below, the…

Q: What is the importance of activated carbon in adsorption?

A: Adsorption is the adhesion of atoms, ions or molecules from a gas, liquid or dissolved solid to a…

Q: If a gas A is adsorbed on a solid surface .12 and obeys Langmuir Isotherm model. The plotting of V/P…

A: The Langmuir equation and modification is provided in the picture, using which we can find the V0…

Q: What are all the possible ways activated carbon can be modified in its adsorption capacity?

A: The adsorption efficiency depends on the nature of activated carbon used, the water composition,…

Q: In a step growth polymerization, there are 1.34 mol A-A type monomer, 1.33 mol B-B type monomer, and…

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Q: Iron- and aluminum-oxide surfaces will generally adsorb cations more strongly at higher pH than at…

A: We have asked whether the given statement is true or false and the given statement is  "Iron- and…

Q: A surface has 8 equivalent adsorption sites for two bound He atoms. How many different…

A: Given: Total equivalent adsorption sites=8 He atoms present=2 To find: Number of configurations

Q: Name some solids that are effective as adsorbents.

A: Adsorption is a surface phenomenon. The term adsorption is defined as the process in which the…

Q: The average time for which an oxygen atom remains adsorbed to a tungsten surface is 0.36 s at 2548 K…

A: Arrhenius equation specifies the relationship between the temperature and reaction rates or time.…

Q: Why does rate of physical adsorption depends upon pressure, temperature, and surface area?

A: Pressure: Increase in pressure increases the adsorption. Fixed number of adsorption site are…

Q: Iron- and aluminum-oxide surfaces will generally adsorb cations more strongly at lower pH than at…

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Q: 1. What is the function of a liquid junction? 2. What causes the potential difference at the liquid…

A: Hi, we are supposed to answer one question. To get the remaining questions solved please mention the…

Q: Explain the relationship given by Freundlich in adsorption isotherm.

A: An empirical relationship between the amount of gas adsorbed into a solid surface and the pressure…

Q: In HPLC columns .a O plate height increases as the particle size of the packing material decreases…

A: Q.1: In high performance liquid chromatography (HPLC) columns, decreasing the particle size of the…

Q: Given the following data, find the Freundlich's adsorption coefficients in C, K C,N. Show all your…

A: The given condition is: Putting the values in equation (1) for Run 1 and Run 2: Dividing equation…

Q: how the liquid junction potential can be eliminated ?

A: When two different concentrations of electrolyte solution come in contact forms liquid junction…

Q: On the surface of the crystals of strontium sulfate can be adaorbed   a. sulfate ion b.…

A: A multiple choice question based on periodic properties that is to be accomplished.

Q: what do you mean by (a) chemisorption (b) persorption (c) desorption .

A: (a)Chemisorption:It is a kind of adsorption process, which involves a chemical reaction between the…

Q: An adsorbent surface has N no.of adsorption sites out of which 'n' fraction of sites are occupied .…

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Q: Coprecipitation due to surface adsorption can be minimized by the following except: reducing the…

A: Coprecipitation due to surface adsorption can be minimized by the following except, (1)reducing the…

Q: About the adsorption process and phenomenon, discuss the interactions between solid and adsorbent in…

A: Given in following question discuss the intrection between solid and absorbent in chemisorption and…

Q: Why can a molecule such as CO easily be dissociated on a metal (Au/CeO2) surface but not in the gas…

A: Adsorption (chemisorption) on a metal surface

Q: Five grams of a catalyst adsorb 400 cm3 of N2 at STP to form a monolayer. What is the surface area…

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Q: The viscosity of mercury at 20 °C is 1.554 cP and 1.450 cP at 40 °C. What is the energy of…

A: Given that Viscosity = 1.554 cP at temperature of 20oC (or 393.25K)  Viscosity = 1.450 cP at…

Q: ) Does this data fit well to a Langmuir isotherm? If yes, determine vm and b.

A: Langmuir adsorption isotherm is used to explain the adsorption by any adsorbate assuming the…

Q: Why is the adsorption of a gas onto a surface almost always an exothermic process?

A: The process of the attachment of particles over the surface of another material is called…

Q: 6. About diffusion; (a) Briefly explain the concept of a driving force. (b) What is the driving…

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Q: Template Assisted Crystallization (TAC) is a a commercial softening alternative. Which of the…

A: Template assisted crystallization is a commercial softening alternative which involves use of…

Q: Adsorption is a real problem in gravimetry, especially when the particle size is large.

A: Gravimetry is considered as a quantitative analytical method which is based on the measurement of a…

Q: a) Give any one practical example of adsorption phenomena. b) Mention any FOUR (4) applications of…

A: The most important and practical application of adsorption is paint. If attractive forces were not…