Question

In: Chemistry

Consider the following standard reduction potentials, For the voltaic cell reaction below, calculate the Fe2+ concentration...

Consider the following standard reduction potentials,

For the voltaic cell reaction below, calculate the Fe2+ concentration that would be needed to produce a cell potential equal to 0.16 V at 25 oC when the pH of the solution is 13.00, [Fe3+] = 0.50 M and [H2O2] = 0.35 M.

Half Reaction

Eo (V)

Fe3+(aq) + e‒ → Fe2+(aq)

0.77

H2O2(aq) + 2 e‒ → 2 OH‒(aq)

0.88

2 Fe2+(aq) + H2O2(aq) → 2 Fe3+(aq) + 2 OH‒(aq)

Solutions

Expert Solution


Related Solutions

Consider the voltaic cell composed of a Mn/Mn2+ electrode and a Fe/Fe2+ electrode. Calculate the concentration...
Consider the voltaic cell composed of a Mn/Mn2+ electrode and a Fe/Fe2+ electrode. Calculate the concentration of Fe2+ if the concentration of Mn2+ is 0.010 M and Ecell is 0.78V.
From the standard reduction potentials in Table 11.1 in the Appendix, calculate the standard cell potential...
From the standard reduction potentials in Table 11.1 in the Appendix, calculate the standard cell potential and the equilibrium constant at 298.15 K for the following reactions: (a) 4 NiOOH(s) + 2 H2O(l) ↔ 4 Ni(OH)2(s) + O2(g) (b) 4 NO3 - (aq) + 4 H+ (aq) ↔ 4 NO(g) + 2 H2O (l) + 3 O2(g)
Calculate the standard cell potential given the following standard reduction potentials: Al3++3e−→Al;E∘=−1.66 V Fe2++2e−→Fe;E∘=−0.440 V Express...
Calculate the standard cell potential given the following standard reduction potentials: Al3++3e−→Al;E∘=−1.66 V Fe2++2e−→Fe;E∘=−0.440 V Express your answer to two decimal places and include the appropriate units.
Use standard reduction potentials to calculate ΔG° for the reaction: ClO4- + 6 Cl- + 6...
Use standard reduction potentials to calculate ΔG° for the reaction: ClO4- + 6 Cl- + 6 H3O+ →ClO- + 3 Cl2 + 9 H2O E°ClO4-/ClO-, H3O+ = +1.36, E°Cl2/Cl- = +1.35827
Use the table of standard reduction potentials given above to calculate the equilibrium constant at standard temperature (25 ∘C) for the following reaction:
Standard reduction potentials Reduction half-reaction E∘ (V) Ag+(aq)+e−→Ag(s) 0.80 Cu2+(aq)+2e−→Cu(s) 0.34 Sn4+(aq)+4e−→Sn(s) 0.15 2H+(aq)+2e−→H2(g) 0 Ni2+(aq)+2e−→Ni(s) −0.26 Fe2+(aq)+2e−→Fe(s) −0.45 Zn2+(aq)+2e−→Zn(s) −0.76 Al3+(aq)+3e−→Al(s) −1.66 Mg2+(aq)+2e−→Mg(s) −2.37 Part A Use the table of standard reduction potentials given above to calculate the equilibrium constant at standard temperature (25 ∘C) for the following reaction: Fe(s)+Ni2+(aq)→Fe2+(aq)+Ni(s) Express your answer numerically. Part B Calculate the standard cell potential (E∘) for the reaction X(s)+Y+(aq)→X+(aq)+Y(s) if K = 3.04×10−3. Express your answer to three significant figures and include the appropriate...
Use the standard reduction potentials to calculate the equilibrium constant for each of the following reactions:...
Use the standard reduction potentials to calculate the equilibrium constant for each of the following reactions: Note if deltaG° for each reaction would be greater than or less than zero. Co2+(aq) + Sn(s) = Co(s) + Sn2+(aq) Ag+(aq) + Cr2+(aq) = Ag(s) + Cr3+(aq)
Problem A) The standard reduction potentials for the following reactions are given below. Pyruvate + 2H+...
Problem A) The standard reduction potentials for the following reactions are given below. Pyruvate + 2H+ + 2e- → Lactate E∘ = -0.190 V NAD+ + 2H+ + 2e- → NADH/H+ E∘ = -0.320V. Calculate △G∘ for the overall spontaneous reaction making use of the relationship between △E∘ and △G∘. Problem B) Calculate the △G∘ʹ for the reaction given the equilibrium constant is 1.97 and the physiological relevant temperature is 37 ∘C. fructose-6-phosphate → glucose-6-phosphate Problem C) Calculate the ratio...
Nickel and aluminum react within a voltaic cell. Calculate the voltage of the standard cell. If...
Nickel and aluminum react within a voltaic cell. Calculate the voltage of the standard cell. If the solutions contain 1.5 M Ni2+ and 0.6 M Al3+, what is the initial voltage?
10. Determine the direction in which the spontaneous reaction occurs from the following standard reduction potentials....
10. Determine the direction in which the spontaneous reaction occurs from the following standard reduction potentials. Indicate the reaction that is occurring at the anode, the cathode, the cell potential and the net ionic reaction. Sn^4+ (ac) + 2e ----> Sn^2+ (ac)   E = 0.15V Fe^3+ (ac) + 1e ----> Fe^2+ (ac) E = 0.77V
A voltaic cell is assembled under standard conditions based on the following reaction : Ni(s) +...
A voltaic cell is assembled under standard conditions based on the following reaction : Ni(s) + 2 Ag+(aq) → Ni+2(aq) + 2 Ag(s) Indicate which statements, if any, about this voltaic cell are true by checking the box in front of each true statment. - The voltaic cell will always produce a positive potential. If the [Ni2+] is doubled while [Ag+] remains standard, the intial potential produced by the voltaic cell will double. If the [Ag+] is doubled while [Ni+2]...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT