18. Semi-permanent adsorption of polar analytes will cause: severe tailing of the peaks non-symmetrical peaks worse band separation all of the above are correct
Q: What complications would a dried-out column (solvent level is below the top of the silica) introduce…
A: Answer
Q: 9. (a) Derive an expression for Langmuir adsorption isotherm for surface reactions with and without…
A: The answers are given below:
Q: Describe the principle and operation of anodic stripping voltammetry (ASV). How does it differ from…
A: Here we have to understand three points 1. Anodic Stripping Voltammetry (ASV) 2. adsorptive…
Q: The calcium ion binds to a certain protein to form a 1:1 complex. The following data were obtained…
A:
Q: Nickel bis-dimethylglyoximate complex was deposited with a weight of (4.869g) with the filter paper…
A:
Q: Explain the method of finding martensite fraction during SIM ?
A: Martensite is formed in carbon steels by rapid cooling of the austenite form of iron at such a high…
Q: “…measurements…have determined dissociation times for I and I* channels of 84±12 fs and 94±6 fs,…
A: The objective of the question is to figure out what does the "fs" in the given part of the sentence…
Q: Which of the following is/are true regarding instrumental methods of analysis? a. these methods…
A:
Q: Give an example of the use of a masking agent.
A:
Q: 30) The separation efficiency of capillary columns over packed columns 31) The most common mobile…
A: Ans. (30) The separation efficiency of capillary columns over packed columns in GC is attributable…
Q: 51. The adsorption of CO on mica at 90K gave the following results: Pressure 1.05 4.55 5.46 7.91…
A: To show whether the given data fit the Langmuir adsorption isotherm or not. “Since you have…
Q: Determine the conditional formation constant (K") for a solution containing 7.50 × 10-3 M Cay2-,…
A: The condition formation constant (K"f) for the solution is calculated as shown below.…
Q: 400 ml of 03 M acetic acid is shaken with 1.6 g of charcoal. The final concentration of the solution…
A: Molarity (M) :- The number of moles of solute dissolved in one litre of solution is known as…
Q: When using ion-selective electrodes, to comensate for a complex or unknown matrix, the __________…
A: Methods used to determine the analyte concentration: a) Least-squares analysis: this method is used…
Q: Can be applied for the separation of ionic (nonprotein) analytes
A: Ans: IEX
Q: The following are data for the adsorption of CO on wood charcoal at 0°C. The following pressure P is…
A:
Q: The conductance of 0.00017 M acetic acid solution is 153 µS when applying a probe with 0.87 cm−1…
A: Given: Concentration of solution, x = 0.00017 M = 0.00017 mol/L Conductance of solution,…
Q: By employing a given conductivity cell with 0.1N potassium chloride at 18pC, an observed…
A: Given: Concentration of Potassium chloride = 0.1 N Conductance = 0.025 mho Specific conductance…
Q: 12 Brunauer -Emmett -Teller (BET) aims to explain the physical adsorption of gas molecules on a…
A: Solution is next step
Q: If Vsu= Vorg, how many times should the extraction process be repeated in order for 1 g of substance…
A: Given: We have to calculate, number of extraction required. KD = 2.25 Vsu= Vorg
Q: The sodium salt of 2-quinizarinsulfonic acid (NaQ) forms a complex with Al" that absorb strongly at…
A: 2-quinazirinsulphonic acid contains two 2 sulphonic acid groups and sodium ions with +1 oxidation…
Q: Which of these types of coprecipitation happens with greater probability when the ratio of the…
A: The four types of coprecipitation are Mechanical entrapment, Mixed crystal formation, surface…
Q: Osmotic pressure of the gold sol with concentration of 4 g/l at 293 K is 8 Pa. Calculate the…
A: Osmotic pressure is given as: π=cRT where, c is the molar concentration of the solution
Q: Nickel bis-dimethylglyoximate complex was depősited with a weight of (4.869g) with the filter paper…
A: % of Ni ions = ? Mass of complex + filter paper = 4.869 g Mass of filter paper = 1.30 g
Q: The calcium ion binds to a certain protein to form a 1:1 complex. The following data were obtained…
A: The binding of ligand to a receptor is one of the most important activity in cell. This activity…
Q: A solution in part C initially contains (4.1000x10^-4) molar SCN¯ and (1.180x10^-1) molar Fe3+. This…
A: Given that: absorbance = 5.150×10-1 initial concentration of Fe3+ = 1.180×10-1 M initial…
Q: The Fe content in a water sample from a well was determined by subjecting an aliquot of 25.00mL of…
A: Number of atoms, ions and molecules present on a given amount can be determined by “Mole Concept”.…
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: Explain the mechanism of analysis of sulfate gravimetrically in [Cu(NH3)4]SO4.H2O complex and…
A: For the gravimetric determination of sulfate ion in [Cu(NH3)4]SO4.H2O complex, we have to separate…
Q: Measurement of adsorption of 40 mL of solution containing Hg by atomic absorption spectrometer…
A: Measurement of adsorption of 40 mL of solution containing Hg by atomic absorption Spectrometer…
Q: Calculate the Ionic strength of solution prepared by mixing of 0.2 M NaNO3 and 0.02M of K2Cr2O7:
A: Given: Concentration of NaNO3 = 0.2 M Concentration of K2Cr2O7 = 0.02 M The dissociation…
Q: Explain how the large OH background is removed before the anion analytes pass into the conductivity…
A: There are two phases in anion exchange chromatography, mobile phase and stationary phase. Stationary…
Q: Ion exchange chromatography consists of? i. stationary phase with a matrix of charged ionizable…
A: Ion exchange chromatography consists of? = D. i and ii i. stationary phase with a matrix of charged…
Q: Band broadening in chromatography is .a O inversely proportional to the column efficiency .b O…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: There are two main types of gravimetric analysis. Volatilization methods are based on isolation and…
A: The given statement is false. Volatilization gravimetry involves separating components of our…
Q: -Lambert law break down? as solvent in this analysis? A 10 cm aliquot of a Fe unknown is diluted to…
A: Given that, Concentration of standard Fe3+ solution (C1) = 2.2 x 10-5 M Absorbance of 2.2 x 10-5 M…
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: Data Sheet: Investigation of Nickel and Copper Coordination Complexes Part B: The Coordination…
A: Given: let density of water be "1.0 g/mL. mass of water=1.0 g/mL×45.6 mLmass of water=45.6 g
Q: Which of the following is/are TRUE regarding instrumental methods of analysis? these methods can…
A: Ans. Instrumental method of analysis: (a) In instrumental analysis much less sample can be used,…
Q: Nickel bis-dimethylglyoximate complex was deposited with a weight of (2.721g) with the filter paper…
A: Given: Mass of Nickel bis-dimethylglyoximate complex+Filter paper= 2.721 g Mass of the filter paper=…
Q: Molar absorptivities of Nickel and Cobalt with 8-quinilinol are εCo = 3529 and εNi = 3228 at 365 nm,…
A: Wavelength Co Ni Molar Absorptivity 365 nm 3529 3228 Molar Absorptivity 700 nm 428.9 0…
Q: synthesis of Tris(ethylenediamine)nickel(1I) chloride dihydrate The equations of the preparation of…
A:
Q: For the extraction of a metal ion with a metal chelator, by how many units will the pH change if the…
A: Given, Distribution ratio D changes from 0.06 to 100.0 D1= 0.06D2=100.0 [HL]org = constant (given)
Q: The formation constant for the complexation of Mg2+ by EDTA is logKflogKf = 8.79. The conditional…
A:
Q: (5) A colored solution of a substance that obeys Beer's law, showed a transmittance of 80% when…
A: A/Q to the beer lamberts law, we know the equation : A =ε × b × C = -log T…
Q: When plotted according to the linear form of the BET equation, data for the adsorption of N2 on…
A:
Q: Including activity coefficients, find [Hg22*] in saturated Hg,Br2 in 0.0250 M MgBr2. Do not use…
A:
Step by step
Solved in 2 steps
- For bulk crystalline sample which technique is best ? Give me handwritten answer with explaination?The molar absorptivity for cobalt and nickel complexes with 2,3-quinoxalinedithiol are 3.64x104L/M-cm for Co at 510nm, 5.52x103L/M-cm and 1.24x103L/M-cm for Co at 656nm and 1.75x104L/M-cm for Ni. A 250mg soil sample that was collected near an industrial metal-processing plant is dissolved, and masking agent is added to avoid interference from other metals present. Color is developed by adding the complexing agent and the sample is diluted to 100.00ml. The absorbance at 510nm is 0.517 and at 656nm it is 0.405 in a 1.00cm cell. Calculate the weight percent of Co and Ni in the soil.21. (What exactly is meant by potentiometric methods? What are they even?)
- If Vsu= Vorg, how many times should the extraction process be repeated so that 1 g of substance with KD= 2.25 passes 90.5% to the organic phase?kindly answer this problem and follow this format GIVEN REQUIRED SOLUTION and write regibly thank you so much For the adsorption of a substance A from aqueous solution by charcoal at25oC the freundlich constants are n=3.0 and k=0.50 for y in grams per gramand C in grams per liter. What weight of a W is adsorbed by 2 g of charcoalfrom 1 L of a solution containing originally 2 g of the substance?Use the data in Table 25.6 in ATKINS for the exchange current density and transfer coefficientfor the reaction:2 H+ + 2e- → H2on nickel at 25oC to determine what current density would be needed to obtain an overpotentialof 0.20 V as calculated from:(a) the Butler-Volmer equation(b) the Tafel equation.Is the validity of the Tafel approximation affected at overpotentials of 0.4 V and more?
- Which of the following is/are correct about Beer's law? Polychromatic wurce of radiation cause a chemical deviations. II. Real deviation ocur due to the higher concentration Mistmatched cells for sample and reference cells cause an insurumental deviation. A) I. II, and III II and III C) I and III D) Only III E) Only IINickel bis-dimethylglyoximate complex was deposited with a weight of (2.721g) with the filter paper from the base medium from adding (10ml) of hot DMG to a salt of nickel chloride at weight (0.4g), find the percentage of nickel ion. Note that the weight of the filter paper (0.78g).Osmotic pressure of the gold sol withconcentration of 4 g/l at 293 K is 8 Pa.Calculate the particles diffusion coefficient if gold density is 19.3 g/cm3, medium viscosity 10-3 Pa•s.
- What is the concentration (M) of the following compound as measured in a 1.000 cm cuvette: Molar absorptivity constant: 3525 (M*cm)-1 and Absorption: 0.5334 Hint: Use the Beer law to solve this problem Group of answer choices 1.513E-04 1.513E+04 1.513191E-04 1.513191E+04 1.5E-04Nickel bis-dimethylglyoximate complex was deposited with a weight of (4.869g) with the filter paper from the base medium from adding (10ml) of hot DMG to a salt of nickel chloride at weight (0.78g), find the percentage of nickel ion. Note that the weight of the filter paper (1.30g). At.Wt.: Ni= 58.69 g/mol, C= 12 g/mol, O=16 g/mol, H=1 g/mol, N=14 g/molWrite the differences between physisorption and chemisorption with respect to the following: (i) Specificity (ii) Temperature dependence (iii) Reversibility and (iv) Enthalpy change