Recent questions in Chemistry

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What is the concentration of copper ions in a given water sample using polarography analysis?

asked Jan 30 in Analytical Chemistry by ConstanceSib (450 points)

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1 answer 95 views

What is the concentration of copper ions in a given solution, using voltammetry as the quantification method?

asked Jan 30 in Analytical Chemistry by LeonoreRisch (230 points)

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What is the concentration of copper ions in a given sample using polarography, if the measured peak current is 2.56 μA and the standard potential of the copper ion electrode is +0.34 V (vs. SCE)?

asked Jan 30 in Analytical Chemistry by LowellGilrea (290 points)

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What is the concentration of copper ions in a given sample of water collected from a river at a specific location using colorimetric analysis?

asked Jan 30 in Analytical Chemistry by JorgeSimoi9 (270 points)

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1 answer 86 views

What is the concentration of copper ions in a 25 mL sample of a 0.05 M copper sulfate solution when the sample is analyzed using coulometry with a current of 2.5 A for 10 seconds?

asked Jan 30 in Analytical Chemistry by CarmaGreenha (330 points)

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What is the concentration of copper ions (Cu2+) in a water sample if a voltammetry experiment showed a peak current of 0.25 mA at a potential of 0.5 V vs. Ag/AgCl electrode, and the calibration plot showed a linear relationship between peak current and concentration of Cu2+ in the range of 5-50 µM?

asked Jan 30 in Analytical Chemistry by HeatherLardn (490 points)

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What is the concentration of copper ions (Cu2+) in a sample solution if the absorbance of the solution at a wavelength of 550 nm is 0.45 and the path length of the sample cell is 1 cm? Given that the molar absorptivity of Cu2+ at this wavelength is 1.5 × 10^4 L mol^-1 cm^-1.

asked Jan 30 in Analytical Chemistry by TaylaHalstea (230 points)

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1 answer 45 views

What is the concentration of copper ions (Cu2+) in a sample of industrial wastewater? Use voltammetry to determine the amount of copper ions present in the sample and calculate the concentration in parts per million (ppm).Note: The student should be familiar with the principles of voltammetry and know how to prepare and analyze samples for this technique.

asked Jan 30 in Analytical Chemistry by LynetteVtp89 (580 points)

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What is the concentration of copper ions (Cu2+) in a 100 mL sample of wastewater if 4652 coulombs of electricity are needed to completely oxidize all the copper ions present? The electrolysis is carried out using a current of 0.25 amperes for a period of 6 minutes. Assume that the only copper present is in the form of Cu2+.

asked Jan 30 in Analytical Chemistry by TimothyTitus (390 points)

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1 answer 111 views

What is the concentration of copper in a soil sample taken from a copper mine using X-ray fluorescence spectroscopy?

asked Jan 30 in Analytical Chemistry by RosalinaJayn (250 points)

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1 answer 83 views

What is the concentration of copper in a sample of ore from a mine, obtained from a particular site, using X-ray fluorescence spectroscopy?

asked Jan 30 in Analytical Chemistry by JacelynWeiss (430 points)

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What is the concentration of copper (II) ions present in a water sample collected from a polluted river using polarography?

asked Jan 30 in Analytical Chemistry by KathrinDesco (310 points)

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What is the concentration of copper (II) ions in a sample of tap water using voltammetric analysis?

asked Jan 30 in Analytical Chemistry by Willis55N919 (250 points)

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1 answer 78 views

What is the concentration of copper (II) ions in a given sample of wastewater using the polarographic method, given the obtained peak current is 2.5 mA and the standard potential of Cu2+ → Cu transformation is -0.34 V, working at a pH of 4.5 with a scan rate of 50 mV/s?

asked Jan 30 in Analytical Chemistry by MattieMcQuad (350 points)

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1 answer 97 views

What is the concentration of chloride ions present in a sample of seawater using the potentiometry technique with a silver chloride electrode?

asked Jan 30 in Analytical Chemistry by IsraelOaks8 (510 points)

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1 answer 103 views

What is the concentration of chloride ions present in a sample of seawater using an ion-selective electrode?

asked Jan 30 in Analytical Chemistry by BryceParry7 (350 points)

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What is the concentration of chloride ions in a sample of water collected from a swimming pool, measured using an ion-selective electrode?

asked Jan 30 in Analytical Chemistry by ReneeJuergen (210 points)

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1 answer 75 views

What is the concentration of chloride ions in a sample of seawater? Use potentiometry to quantify the amount of chloride ions present in the sample.

asked Jan 30 in Analytical Chemistry by AndrePittman (350 points)

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1 answer 90 views

What is the concentration of chloride ions in a sample of seawater, measured in parts per million (ppm), using potentiometry analysis?

asked Jan 30 in Analytical Chemistry by Nelly0341094 (570 points)

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1 answer 89 views

What is the concentration of chloride ions in a sample of seawater, given that the sample had a potential difference of 0.64 V and the standard potential of the silver-silver chloride electrode is 0.22 V at 25°C?

asked Jan 30 in Analytical Chemistry by Eugenio51C48 (710 points)

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