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- For each of the following reactions, determine the overall balanced electrochemical reaction, its standard electric potential, and the standard Gibbs energy of the reaction. aCo+F2Co2++2F bZn+Fe2+Zn2++Fe c Zn+Fe3+Zn2++Fe d Hg2++HgHg22+A conductivity cell filled with a 0.01 M KCl solution was found to have a resistance of 189 ohms at 25oC. When filled with 0.01 M HCl solution, the cell gave a resistance of 64.8 ohms at the same temperature. At 25oC, the conductivity of 0.01 M KCl solution was 1.4088 x 10-3 S cm-1. Calculate (a) the cell constant and (b) the conductivity of the HCl solution. answer is [0.266; 4.105 x 10-3] please explain. thank you!Write the advantages of the glass electrode. (Please write it correctly and concisely.)
- Write the applications of the glass electrode. (Please write it correctly and concisely.)Describe principle of a glass membrane pH electrode.What is the schematic representation of a cell with a saturated calomel electrode as the reference electrode and a silver indicator electrode to measure the p-function of [CrO4²-]? SCE | Ag2CrO4(sat'd), CrO42-(x M)| Ag O SCE || Ag2 CrO4(s), CrO4²-(x M)| Ag SCE ||Ag2 CrO4(sat'd), CrO4²-(x M) | Ag SCE || Ag2CrO4(s), CrO4²-(x M) | Ag
- 8 6. For the cell Cd(Hg)|CDSO,. H,0(s)|Hg,SO,(s)|Hg the emf is given as a function of temperature t (°C), by the emprical expression E(V) = 1.01845 - (4.05 x 105)(t-20) - (9.5 x 10")(t-20)? Calculate the changes in the thermodynamic properties of free energy, entropy and enthalpy for the cell reaction at 25°C.A 0.10 M FeSO:(aq) solution is electrolyzed between a magnesium cathode and a platinum anode with a current density of 1.0 mA cm-2. The hydrogen overpotential is 0.65 V. What will be the concentration of Fe2+ ions when evolution of H2 just begins at the cathode? Assume all activity coefficients are unity. (E°(Fe2*/Fe) = -0.44V)At 25 °C, 0.05 M of MgCl2 electrolyte solution showed molar conductivity of 194.2 S cm? mol-. A cell with electrodes that 1.50 cm² in surface area and 0.50 cm apart is filled with the above electrolyte. Determine the resistance of the solution.
- The exchange current density at the electrode Pt| Fe3+| Fe2+ is 2.4 x 10-3 A cm-2, How many electrons are transported through the double layer per second in the cell (area of 1 cm2 each)? Estimate the number of times per second that a single atom on the surface takes part in an electron transfer event, assuming that the atom occupies 280 pm2 of the surface of the electrodeWhat would the potential of a standard hydrogen electrode (S.H.E.) be under the following conditions? [H+]=0.53 M?H2=5.0 atm?=298 K E = ............... V.Determine the potential of a platinum electrode (vs. SHE) when placed in a mixture of 0.00207 M TICI, and 0.0362 M TICI at 25 °C. T13+ (aq) + 2e- = TIt (aq) E° = 1.25 V EPt = V Determine the potential of a platinum electrode when placed in a mixture of 0.0137 M potassium permanganate (KMNO,) and 0.0667 M manganese chloride (MnCl,) at pH 5.46 and 25 °C. Mno, (aq) + 5e- + 8 H* (aq) = Mn²+ (aq) + 4 H, O(1) E° = 1.51 V Ept = V