Discuss the advantages, disadvantages, and limitations of the technique of cyclic voltammetry in both qualitative and quantitative measurements.
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A: Activity coefficient = 0.59
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Q: Calculate the ionic strength of a solution that is 0.040 mol kg−1 in K3[Fe(CN)6](aq), 0.030 mol kg−1…
A: Given concentration of K3[Fe(CN)6] (aq) = 0.040 mol/kg concentration of KCl (aq) = 0.030 mol/kg…
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Q: Analytical Chemistry Describe the formation of plasma and its functions in ICP-MS technique
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A: The answer is given below
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Q: What are possible sources of error that may occur when performing a cyclic voltammetry experiment?…
A: Cyclic Voltammetry is a method/technique which analyses the transfer of electrons in a reaction…
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Q: The conductivity of 0.20 M solution of KCl at 298 K is 0.025 S cm-1. Calculate its molar…
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Q: Discuss three practical applications of solvent extraction in analytical chemistry
A: A question based on separation process that is to be accomplished.
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Discuss the advantages, disadvantages, and limitations of the technique of cyclic voltammetry in both qualitative and quantitative measurements.
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- The iron content of a large lump of ore is determined by taking a single small sample, dissolving it in acid, and titrating with ceric sulphate after reduction of Fe (III) to Fe (II). What are the possible source of random and systematic errors?The emission of quinine is observed to increase as the pH increases from pH 2.5 to 3.75 but is then observed to decrease at pH > 3.75. Suggest what may be happening to the molecule to account for this observation. Comment on the concentration of quinine in terms of EU limits.Calculate the solubility of Ca(OH)2(s) (Ksp = 1.6 x 10–15) in an aqueous solution buffered to pH 8.0. Show your work and justify any approximations made.
- Discuss three practical applications of solvent extraction in analytical chemistry.A domestic water pipe is suspected to be contaminating drinking water with lead. In order to test this hypothesis, a section of the pipe is leached for 24 hours using 120.0 mL of 4% acetic acid. A 40.00-mL aliquot of the leachate is transferred to an electrochemical cell and 10.00 mL of a 0.200 mM standard solution of Cďd²+ is bo added (as an internal standard). A stripping analysis of the solution yields peak currents of 1.81 µA for lead and 2.18 µA for cadmium. Analysis of a standard solution that is 0.0600 mM in Pb2t and 0.0500 mM in Cd2+ gives peak currents of 2.39 µA and 2.71 µA, respectively, under the same conditions. What is the concentration of Pb²+ in the original leachate? 13.A chemist obtained the following data for percent lindane in the triplicate analysis of an insecticide preparation: 7.23, 6.95, and 7.53%. Calculate the 90% confidence interval for the mean of the the three data, assuming that (a) the only information about the precision of the method is the precision for the three data. (b) on the basis of long experience with the method, it is believed that s---->σ lindane. (c) If s=0.28 is good estimate of σ, how many replicate measurement should be made in order for the mean for the analysis of sample to be within 0.2% of the true mean 90% of the time.
- The cumulative formation constants for the reaction of Co21 with ammonia are log b1 5 1.99, log b2 5 3.50, log b3 5 4.43, log b4 5 5.07, log b5 5 5.13, and log b6 5 4.39. (a) Write the chemical reaction whose equilibrium constant is b4. (b) Write the reaction whose stepwise formation constant is K4 and find its numerical value.Calculate the ionic strength of 0.5M Al2(SO4)3.The absorbance of an unknown dye solution is measured to be 0.47 by a spectrometer. The linear equation of the spectrometer's calibration plot is y= 2156.5 x +0.0213, where y represents absorbance and x represents concentrations of dye. What is the molar concentration of the unknown sample (in mole L)? O2.08e4 O 2.08e-4 0 125e3 0 125e-3