Recent questions in Analytical Chemistry

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What is the concentration of a hydrochloric acid solution if 25.00 mL of it requires 34.87 mL of a 0.120 M sodium hydroxide solution to reach a neutral pH during titration?

asked 6 days ago in Analytical Chemistry by CarmonHeard (450 points)

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1 answer 54 views

What is the concentration of a hydrochloric acid solution if 25 ml of the solution requires 18 ml of a 0.1 M sodium hydroxide solution for complete neutralization during a titration?

asked 6 days ago in Analytical Chemistry by BuckForro541 (490 points)

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What is the concentration of a hydrochloric acid solution if 25 mL of the solution requires 15 mL of 0.1 M sodium hydroxide for complete neutralization?

asked 6 days ago in Analytical Chemistry by YasminAuster (490 points)

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What is the concentration of a hydrochloric acid (HCl) solution in moles per liter (M) if 25 mL of a 0.1 M sodium hydroxide (NaOH) solution is required to neutralize 50 mL of the HCl solution?

asked 6 days ago in Analytical Chemistry by ORDJared2598 (590 points)

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What is the concentration of a hydrochloric acid (HCl) solution if 25.0 ml of it requires 30.0 ml of 0.1 M sodium hydroxide (NaOH) to completely react in a titration?

asked 6 days ago in Analytical Chemistry by ZoeDodd3859 (770 points)

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What is the concentration of a copper(II) ion (Cu2+) solution using polarography if the current at -0.5 V vs. saturated calomel electrode (SCE) is 10 mA and the current at -1.0 V vs. SCE is 25 mA, assuming the standard reduction potential of Cu2+/Cu is +0.34 V vs. SCE and the supporting electrolyte is 0.1 M KCl?

asked 6 days ago in Analytical Chemistry by AngelitaMark (190 points)

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1 answer 60 views

What is the concentration of a copper sulfate solution if 40.0 mL of the solution requires 1350 coulombs of charge to fully oxidize all the copper ions present, using a coulometric titration method? The solution was prepared by dissolving a sample of copper sulfate pentahydrate in water and diluting it to a final volume of 500 mL. Given the molar mass of copper sulfate pentahydrate and the total charge required to oxidize one mole of copper ions.

asked 6 days ago in Analytical Chemistry by GaleGeils14 (370 points)

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What is the concentration of a copper (II) sulfate solution if its absorbance value at 620 nm is 0.45? Use a standard calibration curve with known concentrations of copper (II) sulfate and their corresponding absorbance values to determine the unknown concentration of the solution using colorimetry.

asked 6 days ago in Analytical Chemistry by PasqualePurv (680 points)

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What is the concentration of a copper (II) sulfate solution if its absorbance is measured to be 0.25 using a spectrophotometer with a 1 cm cuvette and a wavelength of 620 nm, assuming a molar absorptivity of 5,400 M^-1cm^-1?

asked 6 days ago in Analytical Chemistry by AlphonseGill (450 points)

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What is the concentration in molarity of a hydrochloric acid solution if it requires 25 mL of a 0.1 M sodium hydroxide solution to neutralize 20 mL of the acid solution?

asked 6 days ago in Analytical Chemistry by LashawnGoose (430 points)

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What is the concentration and identity of proteins present in the given sample using electrophoresis analysis?

asked 6 days ago in Analytical Chemistry by JessieStGeor (350 points)

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What is the concentration and composition of the amino acids present in a given protein sample using capillary electrophoresis as the analytical method?

asked 6 days ago in Analytical Chemistry by Earnest11501 (570 points)

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What is the concentration (in units of moles/liter) of hydrochloric acid (HCl) in a solution based on a titration experiment, in which 25.00 mL of 0.10 M sodium hydroxide (NaOH) solution is required to neutralize 20.00 mL of the HCl solution?

asked 6 days ago in Analytical Chemistry by YasminAuster (490 points)

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1 answer 38 views

What is the concentration (in ppm) of caffeine in a given sample of coffee extract, determined using liquid chromatography?

asked 6 days ago in Analytical Chemistry by RandyMccune2 (580 points)

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1 answer 67 views

What is the concentration (in moles per liter) of a hydrochloric acid (HCl) solution if 25 mL of the solution reacts with 50 mL of a 0.1 M sodium hydroxide (NaOH) solution during a titration process?

asked 6 days ago in Analytical Chemistry by PhoebeAlonzo (430 points)

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What is the concentration (in molarity) of a hydrochloric acid solution, HCl, if 25.0 ml of a 0.100 M sodium hydroxide solution, NaOH, was required to neutralize 35.0 ml of the HCl solution during a titration?

asked 6 days ago in Analytical Chemistry by CornellSumme (390 points)

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1 answer 60 views

What is the concentration (in Molarity) of a hydrochloric acid solution if it requires 25.0 mL of a 0.105 M sodium hydroxide solution for complete neutralization during a titration process?

asked 6 days ago in Analytical Chemistry by TressaV9423 (210 points)

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What is the concentration (in mol/L) of an HCl solution if 25.00 mL of this solution is required to neutralize 0.015 moles of NaOH in a titration?

asked 6 days ago in Analytical Chemistry by RacheleChewi (570 points)

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What is the concentration (in g/L) of FeCl3 in a 25 mL sample that has an absorbance of 0.325 at a wavelength of 535 nm, assuming an extinction coefficient of 976 L/mol/cm?

asked 6 days ago in Analytical Chemistry by SimaSimone3 (510 points)

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1 answer 68 views

What is the composition of the volatile components in a mixture of gasoline using gas chromatography?

asked 6 days ago in Analytical Chemistry by KatrinSallee (370 points)

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