From the activity list included in this problem, which element below would serve as a sacrificial electrode for iron? Zn() Zn²() Ze Activity Series Fe(s)- Fe²(g) 20 Ni(a) Ni²()+ 2e Fe Zn Ni all of these none of these →

Q: The free energy change for the following reaction at 25 °C, when [Zn²*] = 6.08×10³ M and [Cu²*] =…

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Q: What product forms at each electrode in the aqueous electrolysis of the following salts: (a)…

A: (a) Electrolysis of aqueous Cr(NO3)3 solution: Cathode product = Cr(s)  Anode product = O2 (g)…

Q: in one process used for electroplating metal RRr, a current of 23 A was passed through an…

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Q: In one process used for electroplating metal RRr, a current of 13 A was passed through an…

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Q: [2] In acidic solution balance the redox reaction Xe(g) Cr,0, (ag) Xe,Os(s) Cr*(aq) Final balanced…

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Q: Write thehalf-reactionsequations and the overall reaction for the following electrochemical cell:…

A: Given electrochemical cell reaction is,  Cu(s) | Cu2+(aq) || Fe3+(aq) | Fe2+(aq)| Pt(s)

Q: 6) Chromium can be electroplated from aqueous potassium dichromate, with the reduction shown below.…

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Q: Calculate the time (in hours) that it takes for 4.97 grams of Cr (s) to be produced when 1.647…

A: mass of Cr(s) = 4.97 gCurrent (I) = 1.647 ATime (t) = ? hourNote: molar mass of Cr = 51.9961 g/mol

Q: Calculate the emf of the following concentration cell at 25oC:  Cu(s)|Cu2+(0.070 M)||Cu2+(2.1…

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Q: 64. An electrochemical cell consists of a chromium electrode in 1.0 mol/L solution of Cr(NO3)3…

A: Given spontaneous cell reaction:-Cr(s) + 3Ag+(aq)  -------> Cr3+(aq) + 3Ag(s)Here, Cr undergoes…

Q: Calculate the emf of the following concentration cell at 25°C: Cu(s) / Cu**(0.043 M) || Cu**(1.400…

A: EMF of the cell can be calculated by using the Nernst equation: Where, E= cell potential  E0= cell…

Q: Balance the following redox equations by the ion-electron method: You do not need to enter the…

A: Here we are required to balance the redox reaction by ion electron method

Q: If the cell emf of a Zn-Cu cell is 0.80 V when the concentration of Zn2+ is 2.0M, what is the…

A: Given,  The cell emf of a Zn-Cu cell is 0.80 V.The concentration of Cu2+when the concentration of…

Q: Many applications of electrochemistry have been in chemical analysis. Suppose a Fe|Fe+ concentration…

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Q: For the galvanic (voltaic) cell Cd²*(aq) + Fe(s) – Cd(s) + Fe2*(aq) (E° = 0.0400 V), what is the…

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Q: Given an electrochemical cell containing Mg(s) and 0.10 M Mg2+ in one cell compartment and Fe(s) and…

A: All the necessary calculations have been done in the following step.

Q: Which of these metals does not act as a sacrificial electrode for iron?Zn, Mg, Mn, Cu

A: The standard electrode potentials of given metals are Mg: -2.36 V Zn: -0.76 V Mn: -1.185 V Cu: +0.34…

Q: An electrolytic cell consists of a 100.0-g strip of copper in 0.200 M Cu(NO3)2 and a 100.0-g strip…

A: A question based on electrolytic cells that is to be accomplished.

Q: ne electrolysis

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Q: 3- Calculate the exact half-cell potential of Co in 0.01 M CoCl2.

A: Given, The concentration of CoCl2 = 0.01 M The half cell reaction Co→Co2+ +2e-

Q: The standard reduction potential for CuBr(s) + e– → Cu(s) + Br- is 0.031V. Use this value to…

A: Given CuBr(s)  + e-  →  Cu(s)  +  Br-Ereaction0 = 0.031 VKsp for CuBr = To be determined

Q: The free energy change for the following reaction at 25 °C, when [Cd²+]= 9.77×10-3 M and [Cu2+] =…

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Q: What is the electric potential (E) for the following redox reaction at

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Q: The free energy change for the following reaction at 25 °C, when [Cu²']= 2.55×10° M and [Fe°"]= 1.15…

A: Given equation:

Q: When [Cu2+] = 1.24 M, the observed cell potential at 298 K for an electrochemical cell with the…

A: The overall cell reaction :  Cu2+(aq) + Zn(s) ---> Cu(s) + Zn2+(aq)  The observed cell potential…

Q: FeCl3 was electrolyzed using Hittorf cells. Before electrolysis, at the electrode the concentration…

A: Given: Concentration of FeCl3=3.15 M and FeCl2=1 M To find: Transport number of Fe+3. Solution: As…

Q: Based on these data, what is the value of the formation constant, Kr, of (Cu(NH3)4*? Express the…

A: Ans: 3x 10^13

Q: When [Pb2+1 = 1.17 M, the observed cell potential at 298 K for an electrochemical cell with the…

A: Recall the given reaction and the Nerst equation to calculate concentration of Cr3+…

Q: This is on Electrochemistry: Calculate the voltage of the cell Cu(s)     /Cu(NO3)2(0.020 M)   //…

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Q: d) What is the equilibrium direction of the reaction? Write "a" if the reaction is spontaneous in…

A: Answer              Consider the following cell Mns|Mn Br20.046…

Q: The free energy change for the following reaction at 25 °C, when [Pb²*] = 1.15 M and [Fe²*] =…

A: #1:  In the given reaction, Fe(s) is oxidized to Fe2+(aq), whereas Pb2+(aq) is reduced to Pb(s).…

Q: Calculate the electromotive force of a platinum electrode immersed in a solution containing tin ions…

A: Given,  Reduction of Sn2+ ion is : Sn2+ (aq) + 2e- -----------> Sn (s) , E0Sn2+/Sn = +0.15 V…

Q: Cr (s) + 3 Cu* Cr3+ + 3 Cu (s) E°cell = 0.944 V How many electrons are passing in this reaction?…

A: Please find the answer attached.

Q: Cu (aq) + 2Ag(s) → Cu(s) + 2Ag (aq)

A: The relation between standard change in Gibb's free energy and standard reduction potential is given…

Q: Cr20, + 14H* (aq) + 12e¯ → 2Cr(s) + 7H20 (aq) a) How many hours would it take to completely convert…

A: Answer-a Each mole of potassium dichromate has one mole of dichromate ion, therefore moles of…

Q: 5(a) Use the standard reduction potentials at 25° C in Table 18.1 in Tro, Fridgen and Shaw, and…

A: Given,  Mn + Cd2+ → Mn2+ + Cd the standard emf E° of an electrochemical cell for the reaction is:

Q: Calculate the value of the potential for the following electrochemical cell under the conditions…

A: Answer:Galvanic cell is a type of electrochemical cell that converts chemical energy into electrical…

Q: Balance the redox reaction and Use the standard electrode potentials listed on Table 19.1 (or Table…

A: The given chemical reaction is: Fe(s)+MnO2(s)+4H+(aq) → Fe3+(aq)+Mn2+(aq)+H2O(l) Identify the…

Q: 5. Iron and Cadmium are coupled together in a poorly designed component. (a) What is the likely…

A: Given: Iron and cadmium couple.

Q: What is the electric potential (E) for the following redox reaction at 298K when [Ni2+] = 3.0 M, and…

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Q: 2) Balance the following redox equation by the half reactions method. NO3 - (ag) + Cr3+(ag)→ NO(g) +…

A: Redox reactions are the combination of reduction and oxidation reactions. The type of reaction in…

Q: Calculate the amount of Cu (in grams) produced in 1.0 h at inert electrodes in a olution of CuBr2 by…

A: From faraday's law of electrolysis,  W = Zit = Eit/F  Z = E/F Where , w is the mass deposit on…

Q: the half-cell Li(s)|Li+(aq)(1.0 M) is coupled to SHE, the Li(s) electrode will lose mass during the…

A: As we know,   At Cathode reduction taskes place and anode oxidation takes place. Standard Reduction…