If the adsorption of a gas onto a surface is found, somewhat unusually, to be endothermic, what can be said about the entropy change on adsorption?

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

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Q: Why is radius of gyrations important to catalysis  Please explain and give some examples

A: The chemical or biological substance that has a profound role in increasing the rate of a reaction…

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

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

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Q: Which of these types of coprecipitation happens with greater probability when the particle growth of…

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Q: Fatty acid-soap systems exhibit a minimum in surface tension as a function of pH. What causes the…

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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: Using the relation between temperature and diffusion coefficient, if the temperature increases twice…

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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: 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: Construct the expression for Ksp for solid ZnS in aqueous solution. ZnS(s) = Zn**(aq) + S²(aq) 1…

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Q: Can “conventional” physical chemistry, such as the study of kinetics, thermodynamics, spectroscopy…

A: Computational chemistry is the branch of chemistry which uses computer simulation to model molecular…

Q: (a) What is order parameter? Discuss the order parameter of smectic phase.

A: The order parameter is a sort of parameter that actually distinguish between the two phases that are…

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: A plot of Langmuir has been carried out for the adsorption of gas X onto platinum metal. The plot…

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

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Q: Cu is in FCC structure. We know that even at close to melting temperature, vacancies are still…

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Q: The diffusion coefficient of a particular kind of t-RNA molecule is D = 1.0 × 10−11 m2 s−1 in the…

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Q: For how long on average would a hydrogen atom remain on a surface at 400 K if its desorption…

A: The calculations are as given below:

Q: Microemulsions have an extremely high interfacial area between the two phases. Explain how this…

A: Dear Subscriber! You have posted multiple questions. As per our policy , we have solved the first…

Q: The technique of the sorption purification of living body, in which adsorption of toxic substance…

A: Answer is option (c) enterosorption.

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: State the sign of entropy change involved when the molecules of asubstances get adsorbed on a solid…

A: Entropy is a measure of a degree of randomness or a degree of disorder of molecules in a system.

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

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Q: The enthalpy of adsorption of CO on a surface is found to be −120 kJ mol−1. Estimate the mean…

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Q: The location of particle and its direction on.1 solid surface depend on I. The dual interaction…

A: The location of particle and its direction on solid surface depends upon the following factors:

Q: Which of the following is false about electric double layers (EDLS) ? , O The diffusion layer is a…

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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…

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

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

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

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Q: ) and bromine (Br) atom are adsorbed on a small patch of surface (see sketch at right). This patch…

A: Chlorine and Bromine are both non - metals and belongs to VII A group

Q: why crystallization is  considered as a  First-order  Phase transition?

A: Analysing change during crystallization process.