Consider the reaction  MnO2 + 4H+ + 2Br = Mn2+ + Br +2H2O At what pH is the voltage zero if all the other species are at standard concentration?

Q: Consider the reaction at 25°C MnO2(s) + 4 Haq) → Mn(aq) + Br2(1) + 2H20 (1) At what pH is the…

A: The given reaction is,            MnO2(s)+4H(aq)→Mn(aq)+Br2(l)+2H2O the ionic reaction is…

Q: 3. Calculate cell voltages under the following conditions at 25°C: Znlza": 2+ a) Zn Zn* (0.50 M)l…

A: For given cell notation, the half-reactions for reduction-oxidation can be easily found. The "Nernst…

Q: Chemistry (a) Write an overall reaction for the corrosion of solid iron in acidic media, and…

A: #(a): In the corrosion of iron, Fe(s), H2O(l), and O2(g) are the reactants, whereas Fe(OH)2 is the…

Q: Consider the reaction at 25°C (Masterton et al., 2012) Mn02(s) + 4 Hčaq) + 2 Brīag) 2+ → Mnfag) +…

A: We have been asked to find the pH at which the voltage is zero. Reaction is at 25°C

Q: Consider the reaction at 25°C q) + 2 Brīag) → Mnfaq) + Br21) + 2H201) At what pH is the voltage zero…

A: The half cell reactions are: Anode:  Br2(l) + 2e– → 2Br–(aq)      E° = +1.080 VCathode: MnO2 (s)…

Q: In an experiment, 450 dm3 of 0.0450 M zinc (II) bromide solution was electrolyzed until 2.672 g of…

A:

Q: 3. Consider the reaction at 25°C Mn02(s) + 4 Hiag) + 2 Brīag) → Mnag) + Brz) + 2H20) At what pH is…

A: To determine the Eo of the given cell, At anode:Br2(l) + 2e- →2Br-(aq) ; E° = +1.080 VAt…

Q: Determine the molar mass (amu) of Metal (M) if it took 1.04 minutes for a current of 1.22 A to plate…

A:

Q: The maximum corrosion current density in a steel sheet coated with zinc and exposed to seawater is…

A: Given, maximum corrosion density = 5mA/m2 time = 1 year

Q: Calculate the mass of silver deposited at the cathode during electrolysis when a current of 1.80A…

A: Given that , Current (I) = 1.80 A Time (t) = 45 min = 45 x 60 = 2700 sec Electro chemical equivalent…

Q: 5. (a) A galvanic cell consisting of a Cd electrode dipping into a 1.0 M CdCl2 solution and a Pt…

A: Here, we have to determine the standard cell potential of the following cell in which Cd metal…

Q: A cylindrical metal carries a current of 10 A. What will be its diameter, in mm, if the minimum…

A:

Q: pH

A:

Q: A. If the measured cell potential is 1.800V, what is the concentration of Au3+? B. How long will it…

A: Here we have to determine the concentration of Au+3 of the galvanic cell and mass of gold…

Q: 5. Determine the cell potential of the following system: a) Pb/PbSO4//Pb2*/Pb b)…

A:

Q: The element hafnium, Hf, is used in control rods for nuclear reactors and as an insulator for…

A:

Q: how to know the Calculated Voltage, E°cell (V)

A: The electrode which has less negative reduction potential will act as a cathode and will undergo…

Q: Calculate the cell potential for the reaction: 2Fe3+ + 2I− → 2Fe2+ + I2 from the reduction…

A: In a Galvanic cell , oxidation takes place at anode and reduction takes place at cathode  If…

Q: Calculate the cell potential (Ecell) for the following lead concentration cell at 298 K.

A: The Ecell for cell is determined by using Nernst equation. The equation is as follows,

Q: 2. Consider the reaction MnO2(s) + 4H*(aq) + 2Br(aq) → Mn²*(aq) + Br2() + 2H2O«1) At what pH is the…

A: Given Reaction,MnO2(s) + 4Hag+ + 2 Br(aq)- → Mn(ag)2+ + Br2(l) + 2H2O(l),Write nearest equation for…

Q: Determine the molar mass (amu) of Metal (M) if it took 2.85 minutes for a current of 1.1 A to plate…

A: Molar mass can be calculated as:-

Q: Consider the reaction at 25°C Mn02(s) + 4 Hľag) + 2 Brīag) → Mnag) + Br2(1) + 2H20(1) At what pH is…

A: Nernst equation: It is part of electrochemistry which is very useful in determining cell potential…

Q: 3. Consider the reaction at 25°C Mn02(s) + 4 Hag) + 2 Brīag) → Mn ag) + Br2(1) + 2H20(1) + Br21) +…

A:

Q: Under standard conditions (250 C, 1.0 atm): i. If Cr metal is immersed in a solution of Zn(NO3)2,…

A:

Q: Consider the reaction MnO2(s) + 4H(ag) + 2Br (aq) → Mn2*(aq) + Br2() + 2H2O«) At what pH is the…

A:

Q: 3. Use electrode potential data to determine AG° for the reaction 2Als) + 3B12 1) –→ 2AI* (aq. 1M) +…

A: Given- Reaction-2 Al (s) + 3 Br2 (s) → 2 Al3+ (aq) + 6 Br- (aq)  To find- ∆G° for the reaction

Q: Liquid-Junction potentials can be ignored in the calculation for the reduction potential of a cell…

A: Boundary between two electrolyte solution of different composition and across the boundary a…

Q: When the Hg²* concentration is 1.35 M, the observed cell potential at 298K for an electrochemical…

A: An electrochemical cell is cell where redox reaction and we would see electrical energy to get…

Q: Measure the cell potentials of Cells A-D Cell A: Zn(s) | Zn²*(0.10 M) || Sn²*(0.010 M) | Sn(s) Cell…

A: Calculation of cell potential is done using Nernst equation: E=E∘-0.0591nlogPR

Q: Calculate the cell potential for a cell at 38oC with a Cu2+ concentration of 0.01 M and a Zn2+…

A: The given cell reaction is  Zn(s) + Cu2+(aq) ⇌ Zn2+(aq) + Cu(s) Eocell = +1.10 V Also given…

Q: From the above data, what are the standard half-cell potentials for silver and iron/platinum?…

A: Half cell reactions are given by, Oxidation: Fe+2→Fe+3+e-                         Eo=-0.77…

Q: Cell potential of delta E is

A: Using nernst equation we can find cell potential of given cell.

Q: Calculate the cell potential (Ecell) for the following lead concentration cell at 298 K. [Pb2+] =…

A: Given that,Concentration of Pb+2 =0.00100MConcentration of Pb+2 =0.500M

Q: (a) Write an overall reaction for the corrosion of solid iron in acidic media, and calculate the…

A: #(a): In the corrosion of iron, Fe(s), O2(g), and H+(acidic medium) are the reactants, whereas…

Q: The following redox reaction was performed under non-standard conditions. Zn(s) + Cu2+(aq) →…

A: Given, Concentration of Zn2+ = 0.113 M Concentration of Cu2+ = 1.08 M Data from General data,…

Q: The following entries are found in a table of standard clectrode potentials: 1,(5) + 2e = 21- 1,(aq)…

A: Since you have asked multiple question we will solve the first question for you. If you want any…

Q: 1. Cd/Cd2"(0.1м) //Zn2* (0.1M)/Zn 2. Cu/Cu* (0.2м)// Ca2* (0.2M)/cd

A:

Q: Calculate the potential of a platinum electrode in contact with a solution containing 0.1 M VO2* 0.1…

A:

Q: Potentiometric methods of analysis are based upon measurements of the potential of electrochemical…

A: The potentiometry technique involves the measurement of cell potentials under conditions of no…

Q: Calculate cell potential at standard temperature if the concentration of [Cr3+] is o.25 M and [Sn2+]…

A:

Q: Calculate the cell potential (Ecell) for the following lead concentration cell at 298 K.

A: Given that,The concentration at negative pole = 0.005 MThe concentration at positive pole = 1.75…

Q: Consider the reaction MnOza) + 4Ha + 2Bra> Mn?"ca + Bra0) + 2H20m At what pH is the voltage zero if…

A:

Q: Calculate the electrode potential of the semi-cell containing potassium dichromate, K2Cr2O7 0.1 mol…

A: The relationship between electrode potential (E) and standard electrode potential (E°), temperature…

Q: In a standard hydrogen electrode: A) delta G°<0 B) delta G°>0 C) delta G°=0?

A: C) delta G°=0

Q: The maximum corrosion current density in a steel sheet coated with zinc and exposed to seawater is…

A: We have: The maximum corrosion current density in a steel coated with zinc= 5 mA/m2 we need to…

Q: A current of 2 A flows through an aqueous solution of NaOH for 1.5 hours. If the temperature is 27°C…

A: You have given the following data - Current, i= 2A Time, t = 1.5 Hrs = 5400 sec Temp, T = 27 oC =…

Q: 2. Consider the reaction MnO2 (s) + 4H* (aq) + 2Br (aq) → Mn²+ (aq) + Br2(1) + 2H2O(1) At what pH…

A: Given reaction is : MnO2 (s) + 4H+ (aq) + 2Br- (aq) → Mn2+ (aq) + Br2 (l) + 2H2O (l) At what pH is…

Q: Q2: Determine the cell potential for the following concentration cell: i) Cr(s) / Cr3+ (0.05M) //…

A: