In a hydrogen fuel cell, the steps of the chemical reaction are at -electrode: H2 + 20H-→2H20 + 2e-; at + electrode:  1/2O2 +H2O + 2e- → 20H-. Calculate the voltage of the cell. What is the minimum voltage required for electrolysis of water? Explain briefly.

Q: (a) Write the half-reaction that occurs at a hydrogen electrode in acidic aqueous solution when it…

A: Concept introduction: Anodic reaction: It is the reaction that occurs at anode by loss of electrons…

Q: A student constructs an electrochemical cell with a half-cell composed of a nickel anode in a 0.10 M…

A: Interpretation -  To calculate the experimental standard cell potential, Eocell for the reaction…

Q: Assume the specifications of a Ni-Cd voltaic cell include delivery of 0.29 A of current for 1.00 h.…

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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.…

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Q: A galvanic cell is powered by the following redox reaction: CL(9) + Mn (aq) + 2H,0(1) 2+ 2 Cl (aq) +…

A: Given ReactionCl2(g)  +  Mn2+(aq)  + 2H2O (l)  → 2 Cl-(aq)  + MnO2(s)   +  4H+(aq)Half reaction that…

Q: A student constructs an electrochemical cell with a half-cell composed of a nickel anode in a 0.10 M…

A: For cell Ni|Ni2+||Ag+|Ag At anode- Ni(s) -----> Ni2+(aq) + 2e-       ∆E° = 0.23 V At cathode-…

Q: Use a table of Standard Reduction Potentials to predict if a reaction will occur between Hg metal…

A: Redox reaction - it is also known as  oxidation- reduction reaction.  It is a type of chemical…

Q: Assume the specifications of a Ni-Cd voltaic cell include delivery of 0.46 A of current for 1.00 h.…

A: Oxidation takes place at anode.  So, metal will be eroded from anode.  Thus, minimum mass of anode…

Q: One half-cell in a voltaic cell is constructed from a silver wire dipped into a AgNO 3 solution of…

A: Given, Ecell = 1.48 The concentration of Ag+(aq)  has to be calculated.

Q: Balance each of the redox reactions for the conditions stated Label the oxidizing agent and the…

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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: A galvanic cell is powered by the following redox reaction: 3 Cu 3 Cu" (aq)+ Cro, (aq) + 4 H,0(1)…

A: The given redox reaction is: 3Cu2+aq+Cr(OH)3s+5OH-aq→3Cu+aq+CrO42-aq+4H2O(l)

Q: (a) One method to reduce the concentration of unwanted Fe3+(aq) in a                 solution of…

A: The half-reactions are oxidation or reduction reactions, which is useful in balancing redox…

Q: If a water electrolysis cell operates at a current of 7.8 A, how longwill it take to generate 25.0 L…

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Q: Two different electrolytic cells are constructed to electroplate two identical objects based on the…

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Q: The galvanic cell utilizes the following reaction of oxidation of iron and reduction of cadmium at…

A: Fe + Cd+2       - - - - - > Fe+2  + Cd Cd+2 +2e- - - - - - > Cd         E° = - 0.40 V Fe - - -…

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: 2. The following cell is set up: 2. The following cell is set up: Porous Barrier 0.01M Pb(NO32 pH -…

A: The reactions taking place at each electrode are as follows : Multiplying equation (1) by 2 to…

Q: (0.43 M) as the anode and the half-cell Sn2+(x M) | Sn(s) as the cathode; the measured cell voltage…

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Q: The equilibrium constant, K. for a redox reaction is related to the standard cell potential, E by…

A: Part (A)  : Temperature , T =25°C=(25+273)K=298 K Given reaction is : Fe(s) + Ni2+ (aq) →Fe2+ (aq) +…

Q: Suppose the galvanic cell sketched below is powered by the following reaction: Zn(s)+FeCl,(aq) - -…

A: From the give cell reaction, the balanced equation for the half-reaction that happens at cathode od…

Q: 5Cl,(9) + L,(s) + 6 H,0(1) → 10CI"(aq) + 210,(aq) + 12H (aq) nswer the following questions about…

A: Given Galvanic cell 5Cl2 (g) + I2 (s) + 6H2O (l) --------> 10Cl- (aq) + 2IO3- (aq) + 12H+ (aq)…

Q: A galvanic cell at a temperature of 25.0 °C is powered by the following redox reaction: 2vo (aq) +…

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Q: For the following electrochemical cell: a)Calculate the thermodynamic potential and the free energy…

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Q: Sketch the galvanic cell based on the following overall reaction. Calculate Ecell, show the…

A: In the galvanic cell, oxidation reaction occurs at anode and reduction occurs at cathode. The…

Q: A galvanic cell is powered by the following redox reaction: 2+ 2 Zn (aq) + N,H,(aq) + 4OH (aq) 2…

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Q: A certain half-reaction has a standard reduction potential E =+0.43 V. An engineer proposes using…

A: An electrochemical cell is one that converts chemical energy to electrical energy. The cell is…

Q: b. Assuming the two half cells operate at standard conditions, calculate the standard reduction…

A: Recall the given half-cell reactions :                        HgO s  +  H2O l  +  2 e-  →  Hg l  +…

Q: If a water electrolysis cell operates at a current of 7.9 AA , how long will it take to generate…

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Q: A galvanic cell is powered by the following redox reaction: 2 Br,(1) + N,H,(aq) + 4 OH (aq) 4 Br…

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Q: A certain half-reaction has a standard reduction potential En=+0.45 V. An engineer proposes using…

A: Given, Ered=0.45 VEcell=1.40 V

Q: The following galvanic cell isconstructed at 273 K.Each aqueous phase reactant and product has a…

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Q: A galvanic cell is powered by the following redox reaction: + HNO₂(aq) + H+ (aq) + Cut (aq) NO(g) +…

A: Galvanic Cell reaction is ., HNO2(aq) + H+(aq) + Cu+(aq) ---> NO(g) + H2O(l) + Cu2+ The emf of a…

Q: A galvanic cell is powered by the following redox reaction: 2 Cu*(aq) + H,(9) + 2OH (aq) - 2 Cu*…

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Q: O ELECTROCHEMISTRY Designing a galvanic cell from a single-displacement redox reac... Suppose the…

A: Given information:

Q: In a hydrogen fuel cell, the steps of the chemical reaction are      at - electrode:      H2 +…

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Q: Consider a voltaic cell in which the following reaction occurs O2(g) +4H+(ag) + 4Br^-(aq) →…

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

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Q: Assume the specifications of a Ni-Cd voltaic cell include delivery of 0.46 A of current for 1.00 h.…

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Q: The following redox reaction takes place at 25.0℃  2Au(s) + 3F2(g) → 6F-(aq) + 2Au3+(aq) a.…

A: Thequestion deals with the concept of electrochemistry. redox reaction is the  Reaction in which…

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

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Q: A galvanic cell is powered by the following redox reaction: 2 Br,(1) + N,H,(aq) + 4OH (aq) 4 Br (aq)…

A: The balanced reaction taking place is given as,

Q: Will the cell reaction proceed spontaneously as written for the following cell?    Sn (s)  |  Sn2+…

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Q: (c) For the electrochemical cell: Cd (s) / Cd Cl2 (aq, 0.0538 M) // Ag NO, (aq, 0.0320M) / Ag (s) i)…

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Q: A galvanic cell is powered by the following redox reaction: 3+ NO3(aq) + 4H* (aq) + 3 Fe²+ (aq)…

A: Known: EFe3+|Fe2+o=0.771 VENO3-|NOo=0.957 V

Q: Suppose the galvanic cell sketched below is powered by the following reaction: Cu(s)+2 A£NO3(aq) →…

A: Given thatthe cell reaction that takes place in the Galvanic cell is given by Cu(s)   + 2AgNO3(aq) →…

Q: A voltaic cell is constructed with two hydrogen electrodes. Electrode 1 has PH2 = 1.00 atm and an…

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Q: Sometimes in a galvanic cell, an inert electrode is needed.  What element is typically used?  (Give…

A: Galvanic cell :-  An electrochemical cell in which chemical energy of a spontaneous redox reaction…

Q: Suppose we construct a galvanic cell by placing two identical platinum electrodes in two beakers…

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