What is the difference between absorption and adsorption?

Q: A method for the analysis of Ca2+ in water suffers from an interference in the presence of Zn2+.…

A: Consider the concentration of Zn+2 = 1                The concentration of Ca+2 = 100  The given…

Q: What measures can be taken to decrease relative supersaturation during precipitation? Explain.

A: Relative Supersaturation It is given by Q-SS where q is the concentration of the reactant S is the…

Q: An active ingredient has a relative molecular mass of 498. What mass of this active ingredient is…

A: The number of moles of substance present is calculated as the ratio of the given mass of the…

Q: Why is adsorption always exothermic?

A: Adsorption can be defined as a process in which material (adsorbate) travels from a gas or liquid…

Q: How do solvent, temperature, and pH affect fluorescence of fluorophore?

A: Fluorophores are the chemical compounds which with the help of light excitation they can re-emit…

Q: Calculate the isosteric enthalpy of adsorption from the following results which were obtained for…

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Q: What is the correlation of the density of the saltwater mixture and the brightness of the bulb?

A: To explain: The correlation of the density of the saltwater mixture and the brightness of the bulb.…

Q: What are the advantages of a dropping-mercury electrode in polarography? Why is polarography used…

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Q: what are the causes of band spreading in chromatography

A: The answer is given below

Q: Define a molar extinction coefficient and briefly describe how it is measured.

A: Write down the definition of molar extinction coefficient and write down the appropriate formula…

Q: .

A: Dilute solution viscosity measurement for polymer molecular weight determination: Dilute solution…

Q: a. The structure of a standard C4 group chemically bonded to a silica surface through a silyl ether…

A: a) C 4 silica gels are used for the separation of hydrophobic substances in reversed phase…

Q: (b) Explain in detail the statistical treatment of adsorption.

A: The answer is given below:

Q: The volume of O2(g) adsorbed on a surface of 1 g of a silica sample at 5°C is V1=1.4 cm3 at P1=95.1…

A: According to question,Given data,P1 = 95.1 torr,P2 = 760 torr,V1 = 1.4 cm3,V2 = 10.6 cm3

Q: What are the different tetrabasic forms of EDTA? Describe their individual reactivities.

A: The structure of EDTA: EDTA (Ethylenediaminetetraacetic acid) is an amino polycarboxylic acid. The…

Q: Give 3 examples for inorganic binders and write their approximate calcination temperatures.

A: A question based on inorganic binders, which is to be accomplished.

Q: 5. Surface excess of the compounds that have surface activity is: 7,-0 b) l'₁ 0 d) r>0 only above…

A: The solution is given below -

Q: Briefly describe the following background correction methods used in atomic adsorption spectroscopy;…

A: Introduction :  Background Correction method in atomic absorption involves  in the alteration of low…

Q: How do quenchers affect the duration of chemiluminescence reactions?

A: The presence of quencher retards the excitation of compound from its singlet state to triplet state.…

Q: Why are collision cells a necessary addition to mass spectrometers that employ electrospray…

A: In mass spectrometers that employ electrospray ionization, a major challenge is how one can fragment…

Q: 2. Describe the importance of volcano curve in the surface catalysis with suitable examples

A: The answer to the following question is-

Q: Discuss the phenomenon that gives rise to band broadening in chromatography.

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Q: For indirect iodometric analysis of copper oxide, why did you not need to accurately weight out ki…

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Q: 7-2: Why do quantitative and qualitative analyses often require different monochromator slit widths?

A: 7-2 The monochromator is a wavelength selector that is used to select a particular wavelength from a…

Q: List the desirable characteristics of HPLC detectors.

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Q: Nitrogen gas adsorbed on a surface to the extent of 1.242 cm3 g−1 at 350 kPa and 180 K, but at 240 K…

A: Given data contains, Pressure (P1) is 350 kPa. Pressure (P2) is 1.02 MPa=1020 kPa Temperature (T1)…

Q: 18. Semi-permanent adsorption of polar analytes will cause: severe tailing of the peaks…

A: Gas chromatography (GC) is basically an analytical technique which can be used for the separation of…

Q: Vhich of these types of coprecipitation happens with greater probability when the ratio of the…

A: The type of coprecipitation happens with greater probability when the ratio of the contaminant…

Q: difference between adsorption and absorption.

A: Absorption:It is the process by which atoms or molecules or ions enter into a bulk phase such as…

Q: Name the errors of glass electrodes in potentiometric measurements (please write correctly and…

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Q: what is Optical rotatory dispersion and circulatory dichroism method for protein binding?

A: Answer -  Optical rotatory dispersion - Optical rotatory dispersion is the variation in the optical…

Q: What is the difference between photochemistry and chemiluminescence?

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Q: Under what wavelength (in nm) should a spectrophotometer be set to be able to measure the optical…

A: 1. Answer - At 600 nm  wavelength (in nm) should a spectrophotometer be set to be able to measure…

Q: Write the differences between adsorption and absorption?

A: Adsorption is a surface phenomenon. It is of two types which are physisorption and chemisorption.…

Q: The best type of stationary phase for separation of negative ions is alumina C18/silica gel…

A: Negative ions are negatively charged ions. Negatively charged ions binds to only positively charged…

Q: factors

A: unit of measure called the partition coefficient. The greater the solubility of a substance, the…

Q: Distinguish between photodissociation and photoionization.

A: Photo is related to "photon". A photon is defined as a quantum of light or an electromagnetic…

Q: Explain how manufacturers inhibit the physical adsorption of polar analyte species on the silicate…

A: Column used in column chromatography is made up of borosilicates. Silica is polar in nature due to…

Q: Describe the recent development, fundamental principle and application of micro contact printing in…

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Q: (c) Batch adsorption of 900 mg/L phenol was studied at 298 K using 50 mL aliquot at: an optimized…

A: A question based on adsorption that is to be accomplished.

Q: (c) Batch adsorption of 900 mg/L phenol was studied at 298 K using 50 mL aliquot at an optimized…

A: A question based on adsorption that is to be accomplished.

Q: Explain how to obtain larger particles based on the relative supersaturation

A: This explained by von weirmarn equation...

Q: 4. Give the mathematical equation relating the pressure (P) and the extent of adsorption (x/m) of…

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Q: Assuming that the density of silica gel is 2.65 g cm-3 and that the silica particle are spherical…

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Q: What are two ways that a compound can be eluted from an ion-exchange column? What could be the…

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