Chemistry The exchange current density for the electrode Pt(s) │|H2(g) │|H+(aq) is 0.79mA cm-2 at 25°C. What is the current density in the electrode when its overpotential is 5.0 mV, and what is the anode current through of an electrode with a surface area of 5.0 cm2 Solution: . 0,15 mA cm-2, 0,75 mA

Q: Consider the following electrochemical cell in, for which E - 0.18 V at 80°C: cell Pt | H2(g) |…

A: We have to predict the partial pressure of hydrogen gas necessary.

Q: The selectivity coefficient of the fluoride ion-selective electrode is kF-,OH-  = 0.15. How does the…

A: Answer is explained below.

Q: Calculate the electrode potentials of the following half-cells. (a) HC1(3.50 M) H₂(0.950 atm).Pt (b)…

A: calculate the electrode potentials of given rxn

Q: Given the following standard electrode (reduction) potentials, calculate the skip-step potential (E)…

A:

Q: 7. The potential observed in the cell diagrammed below (Ecell) is +0.290 V with the hydrogen…

A:

Q: Consider the electrode/water based solution interface Pt/Ag+ (0.0001 M), Cu2+ (0.01M), Pb2+ (0.1 M),…

A:

Q: What reactions occur during the electrolysis of aqueous Nal between Pt electrodes? & of Na | Na+ =…

A:

Q: The standard cell potential for the reaction provided below is -2.431V, calculate the cell potential…

A:

Q: How much voltage is needed for electrolysis, when in the cell Co|Co2+ (6.40∙10-3M), Zn2+…

A: We have,  Current,A = 0.078 Cell resistance,R = 5.00

Q: The selectivity coefficient of the fluoride ion-selective electrode is kF-,OH- = 0,15. How does the…

A: As per Nikolskii-Eisenman equation:

Q: Calculate the potential of an alloy (Ni) electrode immersed in Ni(OH)2, pH = 9.00, Ksp = 6.5 ×…

A: In electrochemistry, electrode potential is the electromotive force of a galvanic cell built from a…

Q: Electrochemical Cells 17 and Thermodynamics Ke (calculated) Shorthand cell designation Temperature…

A: Cell designation E (measured) Temperature Temperature (K) Hot water = 0.86 V 70 oC 343.15…

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

A: Answer:- This question is answered by using the simple concept of calculation of cell potential…

Q: The selectivity coefficient, Kg+.H*, for a K* ion-selective electrode is 0.00240. When the electrode…

A: For an ion-selective electrode, the potential is given as: E=constant+β0.05916.log[AK++(KK+,H+×AH+)]…

Q: Careful measurements of the potential of the cell Pt|H2(g.pe)|NaOH(aq,0.0100 mol kg-4),NaCl(aq,…

A:

Q: Write the cell reactios and electrode half reactios and calculate the standardpotetial for each of…

A: The galvanic cell is used to convert chemical energy of a spontaneous reaction to electrical energy,…

Q: It is desired to assemble a concentration cell with a potential of 120 mV with two Zn(s) electrodes…

A: A concentration cell is a type of electrochemical cell that has two electrodes that are identical in…

Q: An AgCl (molecular weight of 143.2) surface is grown on an Ag electrode by an electrolyti process.…

A: The objective of the question is to determine the charge that is removed from the battery during the…

Q: Pt| Fe"(a=2,00), Fe**(a=1.20) || I'(a=0.1)| L(s) | Pt (a) Calculate E298. Neglect ion pairs and…

A:

Q: Explain the difference between an electrolyte cell and an electrode cell

A: As per our guidelines we are supposed to answer?️ only one question. Kindly repost other questions…

Q: Using the standard recuction potentials  Au3+ + 3e- = Au   +1.41 volt Ca2+ + 2e-= Ca    -2.74 volt…

A:

Q: Calculate the potential of the following cells. Assume a temperature of 25°C and that activities…

A:

Q: 1 drop 0.2m (u(NO3)2 +9 drops Hau For electrolyt, Sdn confir

A: Given: 1 drop 0.2 M Cu(NO3)2 + 9 drops water 2 drop 0.2 M Zn(NO3)2 + 14 drops water To Calculate:…

Q: Calculate the cell potential of the lead dipole electrode when its concentration is (0.3) at a…

A:

Q: A Hg working reactiois WIII occur on the electrode when the electrode potential is scanned from 0.0V…

A: As the electrode potential is scanned from 0 to -0.50V . From 0 to -0.30V the reduction potential of…

Q: Calculate the potential of the following half-cell take ionic strength effect into consideration:…

A: The half cell reaction taking place is: Standard potential (E0) = 0.77 V Number of ions displaced…

Q: 3. Use electrode potential data to determine AG° for the reaction 2Als) + 3B12 1) –→ 2AI* (aq. 1M) +…

A: Given- Reaction-2 Al (s) + 3 Br2 (s) → 2 Al3+ (aq) + 6 Br- (aq)  To find- ∆G° for the reaction

Q: Calculate the cell potential at 25oC for the Cr(s)|Cr3+(aq)||Sn2+(aq)|Sn(s) electrochemical cell if…

A:

Q: 1. Caleulate th equilibrium constant at 2s E For thereaction: 2H"+ " + Dacg) = Hzegs2D From the…

A: GIVEN:-

Q: 20 mL of 0.01 M V2+ is titrated by 0.01 M Ce4+ in 1 M HCI using SHE reference electrode to find the…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: E = [H*] = 0.50 M PH₂ = = 3.9 atm T = 298 K

A: [H+] = 0.50M PH2 = 3.9 atm T = 298K

Q: From standard reduction potentials, calculate the equilibrium constant at 25 °C for the reaction…

A:

Q: The following entries are found in a table of standard clectrode potentials: 1,(5) + 2e = 21- 1,(aq)…

A: Since you have asked multiple question we will solve the first question for you. If you want any…

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

A: Solution -

Q: From the Nerst equation E = EO + RT/nF In a. show that for a pH electrode that an uncertainty in the…

A: The Nernst Equation enables the determination of cell potential under non-standard conditions. It…

Q: Consider the electrode/water based solution interface Pt/Ag+ (0.01 M), Cd2+ (0.01 M), HClO4 (1 M)…

A: Solution- Hg2+ (aq) + 2e-  → Hg (l) , E0cell Hg2+/ Hg = 0.85 V Ag (s) + Cl→ AgCI (s) , E0cell Ag /…

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

A:

Q: Calculate the potential of a platinum electrode in contact with a solution containing 0.1 M VO2* 0.1…

A: