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- The following cell was found to have a potential of —0.492 V: Ag|AgCl(sat’d)||HA(0.200 M),NaA(0.300 M)|H2(1.00 atm),Pt Calculate the dissociation constant of HA, neglecting the junction potential.The E°cell = 0.135 V for the reaction3I2(s) + 5Cr2O72-(aq) + 34H+(aq) → 6IO3-(aq) + 10Cr3+(aq) + 17H2OWhat is Ecell if [Cr2O72-] = 0.014 M, [H+] = 0.21 M, [IO3-] = 0.00018 M, and [Cr3+] = 0.0039 M?Ecell =Will the equilibrium potential based on the reverse hydrogen electrode be 1.067 V or the same as the SHE of the equilibrium potential OER= 0.0591 V? If the medium is alkaline (0.1M KOH). by using the Nernst eqaution.
- ELECTROCHEMISTRY: Calculate the required voltage (V) if an unknown metal (M) was electrodeposited from an aqueous solution containing M2X1 (where X is the anion) with a supplied current of 5.54 A for 11 h, consuming 0.1826 kWh of electrical energy. Assume that the current efficiency is 85%. (Input values only with 2 decimal places. Do not include the unit.)In a polarographic experiment of a 60 mL of 0.08 M Cu2+solution, a limitingcurrent was left on for 15 minutes. If the average current during the time of theexperiment is 6.0 μA, what fraction of the copper is removed from the solution? TheFaraday constant is 96485 C/mol of electron.Given the following: A cell SCE // Ag2CrO4 (saturated), CrO42- (xM) /AG is used for the determination of pCrO4- (ESCE = -0.244 V at 25 C). The half reaction at indicator electrode is: Ag2CrO4(s) + 2e- 2 Ag(s) + CrO42- (E0 = +0.446 V) What is pCrO4, given the cell potential of 0.402? What type of indicator electrode is Ag in this situation?
- Given a cell: 2 Ag+(aq) + Cu(s) ----> 2Ag (s) + Cu2+ (aq), E(cell) = 0.346 V, E0(cell) = E0cathode - E0anode = 0.800 V - 0.340 V = 0.460 V, I. calculate the concentration of Cu2+ given that of Ag+ is 1.0 x 10-5MIn a electrochemical cell are the molarity of the electrolyte CdCl2=0.10 kg/mole. Calculate the cellpotential at 25 degrees celcius when the activity coefficient for the proces are 0.10 mol/kg, CdCl2-solvent are decided to be 0.228, and the standard cell-potential are 0.624 V. Please answer very soon will give rating surely Show your workIt is desired to assemble a concentration cell with a potential of 120 mV withtwo Zn(s) electrodes immersed, each one, in a ZnSO4 solution. What should be theratio between Zn2+ activities in the two electrodes to reach the desired potential?
- Use the shorthand notation to describe a cell consisting of a saturated calomel reference electrode and a silver indicator electrode for the measurement of (a) pSCN. (b) pI. (c) pSO3 (d) pPO. Then, generate an equation that relates pAnion to Ecell for each of the cells. (For Ag2SO3 Ksp = 1.5 * 10-14; for Ag3PO4, K,p = 1.3 *10-20 ).The following data were obtained using a nitrate electrode for a series of standard solutions ofnitrate: [NO ](M)E (mV)10–1 8510–2 15010–3 20910–4 262 please help me how to solve these questions huhuhuThe following cell was used for the determination of pCrO4: SCE||CrO42- (xM), Ag2CrO4 (sat’d)|Ag Calculate pCrO4 if the cell potential is 0.386.