Someday, cars may be powered by clean H2/O2 fuel cells and electric motors. Under standard conditions, such a fuel cell can develop 1.229 volts. If the oxygen is obtained from air (at P=0.21 bar), what pressure of H2 would be required to develop 1.252 volts from the cell at 25 C?

Q: For the pair of species given: a. Potassium (E° = -2.92 V) and iron/iron(III) (E° = -0.036 V) i.…

A: In oxidation reaction, electrons were released by element and in reduction reaction, electrons will…

Q: Using a library or the Internet, research a fuel cell that usesmethanol for fuel. What is the…

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Q: Salt bridge A concentration cell similar to the one shown is composed of two Cu electrodes and…

A: Given -> [Cu^2+]1 = 4.88 × 10^-2 M [Cu^2+]2 = 1.49 M

Q: Calculate the equilibrium constant, Keg, for the galvanic cell performing the following reaction at…

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Q: Assume the specifications of a Ni-Cd voltaic cell include delivery of 0.25 A of current for 1.00 h.…

A:

Q: Which of the following descriptions is true for the cell below? Cu (s) | Cu²+ (o.1 M) || Fe3+ (o.5…

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Q: Diagram the cell (be specific as possible and include labeling electrodes with their charges and…

A: Step 1: Hello. Since the question contains multiple parts, the first part has been solved. In case…

Q: A digital watch battery draws 0.40 milliamperes of current, which is provided by a mercury battery…

A: Faraday electricity: A movement of electrons is what electricity is. Relation between a number of…

Q: n electrochemical cell is constructed in which both electrodes are pure iron immersed in a solution…

A: Solution - The correct option is (A)

Q: Assume the specifications of a Ni-Cd voltaic cell include delivery of 0.32 A of current for 1.00 h.…

A: Answer: According to the current value and time duration, charge required is…

Q: how many hours will the watch continue to run?

A: A device that is used to store the chemical energy and also there conversion takes place to…

Q: A concentration cell similar to the one shown is composed of two Co electrodes and solutions of…

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Q: A rechargeable battery is constructed based on a concentration cell constructed of two Ag/Ag*…

A: The more dilute solution is of anode and more concentrated solution is of cathode. Since…

Q: Assume the specifications of a Ni-Cd voltaic cell include delivery of 0.37 A of current for 1.00 h.…

A: Given I = 0.37 A t = 1 hr = 60*60 S Minimum mass of Cadmium = ? g

Q: A galvanic cell consists of Mg anode in a 1.0 M Mg (NO3)2 and Al cathode in a 1.0 M Al(NO3)3…

A: Since you have asked a question with multiple sub-parts, we are solving first three parts for you.…

Q: A rechargeable battery is constructed based on a concentration cell constructed of two Ag/Ag*…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: If instead, the reaction is conducted in a refrigerator at 4 °C, the Fe2+ solution is 1.50 M, and…

A: Given: Temperature, T = 4 °C = 273 + 4 = 277 K [Fe2+] = 1.50 M, and  [Cu2+] = 0.030 M To calculate:…

Q: A battery can provide a current of 2.40 A at 2.60 V for 4.50 hr. How much energy (in kJ) is…

A: Answer: If I Ampere current is generated by a battery for t seconds when it is operating at V…

Q: 5. At 298 K, a voltaic cell produces a standard emf of 0.81 V. Calculate the value of n for the cll…

A: Equilibrium constant of cell reaction  K = 1.24 × 1082 T = 298 K Standard emf of cell = 0.81 V We…

Q: A concentration cell is composed of two Co electrodes and solutions of different Co2+…

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Q: Calculate the free energy, AG°, (kJ/mol) for the galvanic cell performing the following reaction as…

A: Oxidation is lose of electrons. Reduction is gaining of electrons. The reactions where oxidation and…

Q: A digital watch battery draws 0.10 milliamperes of current, which is provided by a mercury battery…

A: When a current gets passed in any electrolytic solution, it causes the deposition of chemical at the…

Q: Salt bridge A concentration cell similar to the one shown is composed of two Pb electrodes and…

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Q: At 298 K temperature, a voltaic cell produces a standard; E°cell = 0.718 V. Calculate the value of n…

A: The question is based on the concept of electrochemistry.   the electrode which has higher reduction…

Q: Consider a fuel cell that uses the reaction of ethanol with oxygen to produce electricity. CH,…

A: Given reaction is :  CH3CH2OH (l) + 3O2 (g) -----------> 2CO2 (g) + 3H2O (l) Calculate standard…

Q: A concentration cell similar to the one shown is composed of two Mg electrodes and solutions of…

A: A electrochemical cell is used is used convert chemical energy to electrical energy it involves  a…

Q: An electrochemical cell consists of a half-cell in which a piece of platinum wire is dipped into a…

A: The standard reduction potential values are: Mg2+(aq) + 2e- ---> Mg(s) ; Eo = - 2.37 V  I2(s) +…

Q: A battery can provide a current of 2.20 A at 1.40 V for 10.0 hr. How much energy (in kJ) is…

A: GIVEN: Current = 2.20 A Voltage = 1.40 V Time= 10.0 hr To CALCULATE: Energy (kJ)

Q: 13. You have 1.0 M solutions of Al(NO3)3 and AgNO3 along with Al and Ag electrodes to construct a…

A: Data given: The concentration of Al(NO3)3 = 1 M The concentration of AgNO3 = 1 M The electrodes…

Q: A concentration cell based on the following half reaction at 310 K Mg + 2e – Mg; SRP = -2.37 is made…

A: Since the standard cell potential of a concentration cell is 0, the potential of a concentration…

Q: ) Show the equation and describes Faradays law which relates moles of analyte to charge in coulombs…

A: #(d): Faraday's first law describes the relation between the moles of the analyte deposited at the…

Q: The following reaction proceeds spontaneously under standard conditions because E°cell > 0 (which…

A: 2Ce4+ (aq)  +  2Cl–  (aq)⟶2Ce3+ (aq)+Cl2 (g)  [Ce4+] = 0.013 M, [Ce3+] = 0.60 M, [Cl−] = 0.0030 M,…

Q: Consider a fuel cell that uses the reaction of ethanol with oxygen to produce electricity.…

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Q: An electrochemical cell has the following cell notation: Al(s) | Al3+(aq) || Ni2+(aq) | Ni(s) a.…

A: An electrochemical cell of Al3+/Al and Ni2+/Ni.

Q: A cell utilizes the following reaction and operates at 298 K: 2H+(aq) + Zn(s) → Zn2+(aq) + H2(g)…

A:

Q: Electrolysis of molten  NaClNaCl is done in a Downs cell operating at 7.0 volts (V) and 5.0×104 AA .…

A:

Q: Electrolysis of molten CaCl2 is carried out in an electrolysis cell. If 0.904 ampere current is…

A: Molten CaCl2 is electrolysed by 0.904 ampere current during 3 hours. During electrolysis of molten…

Q: The (fictional) metal unobtanium, Ub, has E° = −0.61 V for the reaction: Ub2+(aq) + 2 e− → Ub(s)…

A: In a  galvanic cell there occurs spontaneous redox reactions  and the energy produced is converted…

Q: An electrical engineer is analyzing an electroplating run and wants to calculate the charge that has…

A:

Q: A cell at 25oC is described by the following cell notation Zn(s) | Zn2+(aq) || Zn2+(aq) | Zn(s) The…

A: The given cell is: Temperature = 25˚C = 298 K a) Since it is a concentration cell, i.e. both the…

Q: The following figure represents an electrochemical cell at 25.00C with aqueous solutions that behave…

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Q: Consider the standard voltaic (or galvanic) cell: Fe,Fe2+ versus Au, Au3+. Which answer identifies…

A: Higher the value of standard reduction potential for a species higher will be its tendency to gain…

Q: A digital watch battery draws 0.10 milliamperes of current, which is provided by a mercury battery…

A: m=Mass of Hg=1.10g Equivalent wt of Hg =200.59/2 =100.295 Current = 0.10 mA or 0.10x10-3 F=96500C…

Q: 2. A galvanic cell consists of a lead anode immersed in a 1.00 M solution of Pb(NO3)2 and a platinum…

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Q: what is the eo cell? what is the equilibrium constant at 298 K?

A: We have to calculate the Eocell and Keq . In the given reaction, Br2 is reduced to Br- and I- is…

Q: Calculate the free energy change and equilibrium constant for the following cell, at 25°C Zn /Zn2*…

A: Cell reaction is :                           Zn(s) + Cu2+(aq)    ⇔Cu(s) + Zn2+(aq)            E0cell…

Q: A Ni Ni 2+Ag Ag + galvanic cell is constructed in which the standard cell potential is 1.03 V.…

A: cell potential = 1.03 V wt of silver deposited= 1g  Free energy :  The maximum work a system can…

Q: An electrochemical cell consists of a half-cell in which a piece of platinum wire is dipped into a…

A: Solution: In electrochemical cell, oxidation takes place at anode while reduction takes place at…

Q: Calculate AG° for the reaction 2Mno4 + 6H+ + 5HCHO2 – 2MN²+ + 8H20 + 5CO2 for which E°cell = 1.69 V.…

A: Answer is explained below. From the given reaction it is clear that number of moles electron change…

Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.