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If the E0cell of Ag I Ag+ II Pb2+I Pb is 2.5 V it can power devices requiring 2.5 V or more.
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- Through a solution containing 34.69 mmol tetramethylammonium picrate per kg of solution, a current was sent for 1 h 50 min between a Ag anode and a Ag/AgCl cathode. The solution was then divided into three parts: anode, middle, and cathode solution. The anode solution weighed 31.238 g and contained 42.36 mmol picrate ion per kg; the cathode solution weighed 46.065 g and contained 29.51 mmol picrate ion per kg. The middle solution still contained 34.69 mmol tetramethylammonium picrate per kg of solution and no other kinds of ions. In a coulometer, connected in series, 63.41 mg silver had simultaneously precipitated. The organic ions do not react in this process. Find the transference number of the cation at the temperature of the experiment. Express your answer in four significant figures.Through a solution containing 34.69 mmol tetramethylammonium picrate per kg of solution, a current was sent for 1 h 50 min between a Ag anode and a Ag/AgCl cathode. The solution was then divided into three parts: anode, middle, and cathode solution. The anode solution weighed 31.238 g and contained 42.36 mmol picrate ion per kg; the cathode solution weighed 46.065 g and contained 29.51 mmol picrate ion per kg. The middle solution still contained 34.69 mmol tetramethylammonium picrate per kg of solution and no other kinds of ions. In a coulometer, connected in series, 63.41 mg silver had simultaneously precipitated. The organic ions do not react in this process. Find the transference number of the cation at the temperature of the experiment.,If the value of E°cell is 0.59 V for the reaction C12(g) + 2FE2+(aq) → 2FE3+(aq) + 2Cl-(aq), what is the value of E°cell for 2Cl-(aq) + Fe3+(aq) → Fe2+(aq) + ½C12(g)? -0.30 ?
- A concentration cell consists of two half-cells with identical electrodes but different ion concentrations. Consider the following concentration cell (pictured below). M(s) | M*(satd MX) || M+ (0.100 M)| M(s) Ecell = 0.417 V At the anode, a metal electrode (M) is placed in a saturated aqueous solution containing ions of the same metal (M) and a halogen (X), MX. At the cathode, a second electrode of the same metal (M) is placed in a solution with [M*] = 0.100 M.The two half-cells are connected by a salt bridge, and the measured cell voltage is 0.417 V. The cell reaction occurring in this concentration cell is Reduction: M*(0.100 M) + e → M(s) Oxidation: M(s) → M*(satd MX) + e* From this information, calculate the Ksp of MX. NOTE: You may enter a number in scientific notation as: 6.6E-66 or 6.66*10^-66 or 6.66x10^-66 (DO NOT ADD Spaces) Anode M MX(s) MX (sat'd aq) 0.417 Voltmeter Salt bridge KNO3(aq) Cathode M+ (0.100M)Calculate DG° f( in kJ) or the reaction of iron(II) ions with permanganate ions. (F =96500 C) MnO4(aq) + 8H*(aq) + 5e¯ –→ Fe3*(aq) + e¯ → Mn2*(aq) + 4H20(1) E° = 1.51 V Fe2*(aq) E° 0.77 V Type your answer...If Mt3+(aq) + 3e- --> Mt(s) Eo=1.66 V and Yx2+(aq) + 2e- --> Yx(s) Eo=-0.40 V, calculate Eo for the following reaction: 2Mt3+(aq) + 3Yx(s) --> 2Mt(s) + 3Yx2+ (aq).
- 26A lead storage battery delivers a current of 6 A for one hour and 22 minutes at a voltage of 12 V. Pb + PbOzni + 250 (an) + 4H > 2PBSO. (sj + 2H20 How many grams of Pb are converted to PbSO4? How much electrical energy is produced in kilowatt hours? 3. a. b.How many grams of nickel metal will be deposited from a solution that contains Ni²* ions if a current of 0.704 A is applied for 67.7 minutes. grams
- line notation Pt(s) | X+(aq), X2+(aq) || Y3+(aq) | Y(s) X2+ + e- X+ Eo = 0.34 V Y3+ + 3 e- Y Eo = -2.2 V Pt4+ + 4 e- Pt Eo = 1.20 V Calculate the EMF.Given the line notation: Pts) IX* (ag), X2* (aq) I| Y3+ (aq) | Y(s) where: x2+ + e - x+ E° = 0.4 V Y3+ + 3 e → Y E° = -1.84 V P4+ + 4 e → Pt E° = 1.20 V Calculate the EMF.Q4:-Put a mark of true or false in front of the following statements and correct the error, if any:- 1-In (Cathodic protection system) sacrificial anode, which is more voltage than the metal to be protected from corrosion. 2-In oxidation-reduction reactions of solutions of strong acids, the oxygen ions are less reduced than the liberated hydrogen ions. 3-Techniques Tafel extrapolation test are used in corrosion rate measurements to overcoming the disadvantages of the Linear polarization method 4-A differential aeration cell,corrosion take place from electrode being thoroughly aerated to another de aerated. 5-Selective Leaching corrosion based on the more electrochemical component of an alloy is usually the element that is removed. 6-Electrolytic Cells are Non-spontaneous redox reactions and convert the chemical energy to electric energy. 7-Sour Corrosion term refer on corrosion due to gases which contain high concentrations of CO₂ alone, and called sour gas, while acid gas, can refer…