In a standard hydrogen electrode: A) delta G°<0 B) delta G°>0 C) delta G°=0?

Q: A solution containing vanadium (chemical symbol V) in an unknown oxidation state was electrolyzed…

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Q: You would like to produce a gold-plated coin by plating gold onto a penny 1.90 cm in diameter. How…

A: this problem is based on faraday 1at  law  According to this law amount of substance deposited at…

Q: Consider the reaction at 25°C MnO2(s) + 4 Haq) → Mn(aq) + Br2(1) + 2H20 (1) At what pH is the…

A: The given reaction is,            MnO2(s)+4H(aq)→Mn(aq)+Br2(l)+2H2O the ionic reaction is…

Q: A thin circular-disk earring 4.00 cm in diameter is plated with a coating of gold 0.25 mm thick from…

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Q: Given the following data: Cathode= AuNO3 (0.01 M)  Anode: Hydrogen (1.01 M) In the attached…

A: The Nernst equation provides a relation between the cell potential of an electrochemical cell, the…

Q: Calculate the potential for the following half-cell: Ag+(0.120M) + 1e- → Ag

A: The expression of Nernst equation is shown below: Ecell =E0cell -0.0591nlog Q Where; Ecell= cell…

Q: (b) A constant current was passed through a solution of AuCl; between gold (Au) electrodes. After a…

A: Given, Mass of gold deposited = 2.628g Time = 20min = 1200 second

Q: An MnO2(s) /Mn2+(aq) electrode in which the pH is 10.30 is prepared. Find the [Mn2+] necessary to…

A: Refer to the attached pics for the full answer.

Q: How long would a constant current of 5.0 amperes be required to flow in order to plate out 5.0 g of…

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Q: An electrode is called an active electrode when? Select the correct answer below: it does…

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Q: Given the cell: Pb| Pb2* (0.120 M) || Cd2* (0.050 M) | Cd Answer the ff: 1. The standard cell…

A: The given cell  notation is  Pb / Pb2+(0.120 M) // Cd2+(0.050 M) /Cd The standard cell potential,…

Q: Determine the ECell value and Nernst equality of the following cell (E0Mn2⁺/Mn = -1.18 V and…

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Q: A thin circular-disk earring 4.00 cm in diameter is platedwith a coating of gold 0.25 mm thick from…

A: GIVEN: Diameter of earring =4.00cm Thickness of coating=0.25 mm Current(I) = 0.013 A d of gold =19.3…

Q: Electrochemical cells are constructed using different electrodes in Fe^ 2+ /Fe^ 3+ (1M)[ electrolyte…

A: Answer : only can answer aboves ones you can send Below ones in other questions.

Q: Which of the following expressions is correct for the maximum mass of copper, in grams, that could…

A: Given values -&gt; Time = 16hour = 16 × 60×60 seconds                             =16×3600 seconds…

Q: Calculate the potential of the following cell at 25°C: (Al IAIP (0.01M) IZn"(0.0085M)I Zn)

A: Al | Al+3(0.01M)||Zn+2(0.0085 M)| Zn

Q: A voltaic cell has a Ni electrode (Ni metal in Ni²+ solution) and an Ag electrode (Ag metal in Ag*…

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Q: culate the potential of an aluminum electrode immersed in C satu

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Q: pH

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Q: Calculate the potential of the copper electrode immersed in a. 0.0440 M Cu(NO3)2 b. 0.0750 M in…

A: Hi! Since there are multiple questions posted. We are answering first question. If you need further…

Q: • Calculate the potential for the Cu2+/Cut electrode at 25°C when the Cut ion concentration is 1/3…

A: Given,  Cu+ ion concentration is 1/3 of the Cu2+ ion concentration  Calculate the potential of…

Q: Write the net cell equation for the electrochemical cell. Phases are optional De ot include the…

A: The emf of cell is calculated using formula as follows:- Ecell = Eocell-0.0592nlogproductreactant…

Q: If the measured potential of a half-cell is 0.584 V when measured against the SCE. What the…

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Q: Consider the reaction at 25°C Mn02(s) + 4 Hľag) + 2 Brīag) → Mnag) + Br2(1) + 2H20(1) At what pH is…

A: Nernst equation: It is part of electrochemistry which is very useful in determining cell potential…

Q: A concentration cell is constructed with two Zn1s2-Zn2+1aq2 half-cells. In one half-cell 3Zn2+4 =…

A: Given information: Concentration of Zn2+ = 1.35 M Concentration of Zn2+ in other cell =  3.75×10-4 M

Q: The Electrode potential of a cell with Cu/Cu2+ (1M) and Zn/Zn2+(1M) in voltage is... (2 significant…

A: Given,  The electrode potential of a cell with Cu/Cu2+ (1 M) and Zn/Zn2+ (1M) is:

Q: What would the potential of a standard hydrogen electrode (S.H.E.) be under the given conditions?…

A: The potential of standard hydrogen electrode ( S.H.E ) can be calculated by using Nernst equation. E…

Q: How long (in minutes) should a current of 6 amperes be applied through a solution of silver nitrate…

A: It is an application of Faraday  first law of electrolysis

Q: How long does it take to deposit a coating of gold 1.00 μm thick on a disk-shaped medallion 4.00 cm…

A: Introduction :  According to the Faraday first law of electrolysis, the amount of chemical reaction…

Q: What would the potential of a standard hydrogen electrode (S.H.E.) be under the following…

A: Given,  Molar concentration of H+ = [H+] = 0.12 M  Pressure of H2 = PH2 = 2.2 atm  Temperature = T =…

Q: When a current of 0.4 A flows for 1.5 micro-seconds in a coper wire, estimate the number of…

A: Calculate the total magnitude of charge. Charge = Current × TimeCharge = 0.4 A × 1.5 × 10-6 sCharge…

Q: +6H20

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Q: Calculate the cell potential (Ecell) for the following lead concentration cell at 298 K. [Pb2+] =…

A: Given that,Concentration of Pb+2 =0.00100MConcentration of Pb+2 =0.500M

Q: Which of the following is not a type of electrode? A-) Three phase electrode Four Phase electrode…

A: Electrode is any substance which is a good conductor of electricity and these substances usually…

Q: ELECTROCHEMISTRY: Determine the molar mass (amu) of Metal (M) if it took 2.28 minutes for a current…

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Q: A voltaic cell consists of a Cd/Cd2+ electrode (E° = –0.40 V) and a Fe/Fe2+ electrode (E° = –0.44…

A: Given: A voltaic cell consists of a Cd/Cd2+ electrode (E° = –0.40 V) and a Fe/Fe2+ electrode (E° =…

Q: Calculate the theoratical potential of the fallowing cells (In each case assume approximately qual…

A: To calculate theoretical potential of following cells: a).

Q: Consider the reaction MnOza) + 4Ha + 2Bra> Mn?"ca + Bra0) + 2H20m At what pH is the voltage zero if…

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Q: A current is applied to two electrolytic cells in series. In the first, silver is deposited; in the…

A: In electrolytic cell the electrical energy is used to process a redox reaction. The reduction will…

Q: What would the potential of a standard hydrogen electrode (S.H.E.) be under the given conditions?…

A: Standard hydrogen electrode:  A Standard Hydrogen Electrode (SHE) is an standard electrode that is…

Q: determine the potential of the hydrogen electrode immersed in an acidic solution with pH = 3.5

A: The reduction potential of a half cell electrode can be determined by using Nernst equation . E = E°…

Q: A potential difference of 2.0 V is impressed across a pairof inert electrodes (e.g., platinum) that…

A: Electrolysis It is the process of decomposition of an electrolyte by passing electricity through…

Q: You would like to produce a gold-plated coin by plating gold onto a penny 1.90 cm in diameter. How…

A: Given : radius of coin = 1.9 cm = r And thickness of gold required = 0.79 mm = 0.079 cm = t…

Q: Determine the value of Ecell (25°C) for the following galvanic cell: Q (s)  ∣  Q2+(aq, 1.5 M)  ‖…

A: The cell given is, =&gt; Q (s) | Q2+ (aq, 1.5 M) || Z+ (aq, 0.088 M) | Z (s) The half reactions…

Q: A hydrogen electrode is immersed in a 1.9 M solution of acetic acid at 25 "C. This electrode is…

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Q: How long does it take to deposit a coating of gold 1.00 µm thick on a disk-shaped medallion 4.00 cm…

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Q: An unstirred solution of 2.00 M NaCl was electrolyzed for a period of 28.9 min and then titrated…

A: Concentration of NaCl = 2M Time duration of electrolysis = 28.9min Concentration of HCl = 0.314M…

Q: A 0.400-g sample of toothpaste was boiled with a 50-mL solution containing a citrate buffer and NaCl…

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Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.