Recent questions in ElectroChemistry

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What is the anodic Tafel slope for the oxidation of zinc in a solution of 0.5 M NaCl at 25°C with a current density of 5 mA/cm2? The exchange current density value for the reaction is 2.5 x 10^-6 A/cm2.

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the activation energy for the reaction between 2 M of HCl and 2 M of NaOH at a temperature of 25°C when a voltage of 1.5 V is applied?

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the activation energy for the oxidation of hydrogen gas at a Pt electrode, where the overpotential is 100 mV and the current density is 0.5 mA/cm2?

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the activation energy for the oxidation of copper in a 1 M copper sulfate solution with a standard reduction potential of +0.34 V at 298 K, given that the exchange current density is 5.6 x 10^-6 Acm^-2 and the reaction order is unity?

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the activation energy for the electrochemical reaction that occurs when zinc metal is oxidized to form Zn2+ ions in a solution containing HCl? Calculate the activation energy at 25°C from the experimental data obtained from the Tafel plot.

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the activation energy required for the oxidation of tin in a solution of hydrochloric acid, given that the standard electrode potential for the Sn2+/Sn couple is -0.14 V and the rate constant for the reaction is 5.6 x 10^-3 molL^-1s^-1 at 25°C?

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the activation energy for the electrochemical reaction occurring between zinc and copper ions, given that the reaction has a rate constant of 1.5 x 10^-4 mol L^-1 s^-1 at 25°C and a rate constant of 6.2 x 10^-3 mol L^-1 s^-1 at 40°C?

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the activation energy for the electrochemical reaction between copper and zinc ions using a copper-zinc galvanic cell at 25°C and a potential difference of 1.8V?

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the anodic Tafel slope for an electrochemical reaction where the current density increases by a factor of 10 as the overpotential increases from 0.1 V to 0.3 V? The exchange current density at the electrode is 1.0 x 10^-5 A/cm^2.

asked Feb 28 in ElectroChemistry by TheScientist (138k points)

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What is the standard potential of the Zn/Zn²⁺ electrode with respect to the standard hydrogen electrode (SHE), given that the reduction potential of Zn²⁺ is -0.761 V?

asked Feb 25 in ElectroChemistry by TheScientist (138k points)

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What is the standard electrode potential for the reduction of Ag+ ions to Ag(s) at a temperature of 25°C, given that the standard electrode potential for the standard hydrogen electrode is 0.00 V and the standard electrode potential for Ag+/Ag is +0.80 V?

asked Feb 25 in ElectroChemistry by TheScientist (138k points)

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What is the standard electrode potential of a silver electrode (Ag) when it is dipped in a solution of silver nitrate (AgNO3) at 298 K and 1 atm pressure? The reduction half-reaction for silver is: Ag+(aq) + e- -> Ag(s).

asked Feb 25 in ElectroChemistry by TheScientist (138k points)

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What is the number of electrons transferred during the redox reaction between copper metal and silver ion, if a solution containing 0.05 moles of copper metal is used with 0.1 moles of silver ion?

asked Feb 24 in ElectroChemistry by JoesphWoffor (2.3k points)

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1 answer 23 views

What is the power output of a lithium-ion battery if the battery has an electrode potential of 3.7 volts and a current flow of 2 amperes?

asked Feb 22 in ElectroChemistry by Bev611336790 (1.8k points)

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What is the oxidation state of the sulfur atom in sulfuric acid (H2SO4)?

asked Feb 22 in ElectroChemistry by CorineSasaki (1.8k points)

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What is the overpotential of an electrochemical reaction if the standard potential is 0.8V and the measured potential is 1.2V?

asked Feb 22 in ElectroChemistry by HalleySomers (1.8k points)

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What is the overpotential required for the oxidation of silver ions to silver metal at a silver electrode if the reduction potential for the reaction is +0.80 V and the applied voltage is +1.00 V?

asked Feb 22 in ElectroChemistry by RenaCastella (1.7k points)

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1 answer 28 views

What is the overpotential for the reduction of copper ions to copper metal at a cathode if the standard potential for the reaction is +0.34 V and the actual potential applied is +0.50 V?

asked Feb 22 in ElectroChemistry by SimonMcWilli (1.9k points)

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What is the overpotential required to generate a current of 0.5 A in a galvanic cell where the standard potential is 1.4 V and the actual potential is 1.6 V? Show the calculations and explain why the overpotential is necessary for the reaction to proceed.

asked Feb 22 in ElectroChemistry by EvieOconnor (2.3k points)

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What is the Faraday constant and how can it be calculated from experimental data of electrolysis of nickel (II) sulfate using a current of 2.0 A for a duration of 2.5 hours, where the mass of nickel deposited on the cathode is known to be 0.245 g?

asked Feb 20 in ElectroChemistry by LawrenceShel (1.6k points)

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