The E° value for the following reaction is 0.446 V relative to the standard hydrogen electrode (SHE):   Ag2CrO4(s) + 2e-  2Ag(s) + CrO42-(aq) A chemist wishes to determine the concentration of CrO42- electrochemically. A cell is constructed consisting of a saturated calomel electrode (SCE; which has a reduction potential of 0.242 V relative to the SHE) and a silver wire coated with Ag2CrO4 and suspended in a CrO42- solution. Answer the following: (a) What is the potential of this cell at 25°C when [CrO42-] = 4.20×10-7 M? (b) For a solution of unknown [CrO42-], the measured potential for the cell at 25°C is 0.523 V. What is [CrO42-] (in mol/L)?

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A: Here the standard reduction potential of Cd2+ is higher than standard reduction potential of Zn2+.…

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Q: Consider the galvanic cell based on the following half-reactions: Mn2+ + 2e –→ Mn €° = -1.18 V Fe?+…

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Q: Consider the galvanic cell based on the following half-reactions: Zn²+ + 2e → Zn ɛ° = –0.76 V Fe?+ +…

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Q: In a galvanic cell based on the half reactions Ni²⁺(aq) + 2e⁻ → Ni(s) E° = -0.250 V 2H⁺(aq) + 2e⁻…

A: The cell reactions are :   Ni²⁺(aq) + 2e⁻ → Ni(s) E° = -0.250 V 2H⁺(aq) + 2e⁻ → H₂ E° = 0.000 V…

Q: In a galvanic cell based on the half reactions Ni²⁺(aq) + 2e⁻ → Ni(s) E° = -0.250 V 2H⁺(aq) + 2e⁻ →…

A: As the electrode potential of  Ni²⁺(aq) + 2e⁻ → Ni(s) is negative so it will be a stronger reducing…

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Q: 2. Consider a concentration cell which used the following half-reaction at 273 K. Co2*(aq) + 2e- →…

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Q: E The saturated calomel electrode, abbreviated SCE, is often used as a reference electrode in making…

A: Given the standard potential of the saturated calomel electrode(SCE), Eo = 0.242 V

Q: In a galvanic cell based on the half reactions Ni²⁺(aq) + 2e⁻ → Ni(s) E° = -0.250 V 2H⁺(aq) + 2e⁻ →…

A: For the galvanic cell, Cathode Reaction: 2H+ (aq) + 2e- → H2 (g) E°H+/H2 = 0.00VAnode Reaction:…

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Q: The cell potential of the following electrochemical cell depends on the gold concentration in the…

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Q: Consider the galvanic cell based on the following half-reactions. Ag+ + e− → Ag ℰ° = +0.80 V Cd2+ +…

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Q: Consider the galvanic cell based on the following half-reactions: Zn2+ + 2e - Zn e=-0.76 V Fe+ + 2e…

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Q: Consider a galvanic cell built on the following half-reactions with their standard reduction…

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Q: We construct an electrochemical cell at 25 o C as follows, one half-cell is standard Zn 2+ |Zn cell,…

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Q: In a galvanic cell based on the half reactions Ni²⁺(aq) + 2e⁻ → Ni(s) E° = -0.250 V 2H⁺(aq) + 2e⁻ →…

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Q: Consider the following galvanic cell and calculate the cell potential (Ecell). Co(s) | Co2"(aq, 0.15…

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Q: What is the equilibrium constant, KC, for the following reaction at 25oC: Mn(s) + Zn2+(aq) ←→…

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Q: Part A The cell potential of the following electrochemical cell depends on the pH of the solution in…

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Q: A galvanic cell consists of a Ni/Ni²+ half-cell and a Co/Co²+ half-cell with initial concentrations:…

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Q: Calculate biological standard potential of the NAD+/NADH couple at 25°C. The reduction half-reaction…

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Q: Experimental solid-oxide fuel cells that use butane (C4H10C4H10) as the fuel have been reported…

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Q: Consider the galvanic cell based on the following half-reactions: Zn2+ + 2e + Zn e° = -0.76 V Ca2+ +…

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