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The Nernst Equation Solutions Library

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80 solutions

The Nernst Equation

Q. A Cu/Cu2+ concentration cell has a voltage of 0.21V at 25 °C. The concentration of Cu2+ in one of the half-cells is 1.6. What is the concentration ...

Solved • Mar 25, 2020

The Nernst Equation

Q. The cell diagram for the lead-acid cell that is used in automobile and truck batteries isPb(s) l PbSO4 (s) l H2SO4 (aq) l PbO2(s), PbSO4(s) l Pb (s...

Solved • Mar 20, 2020

The Nernst Equation

Q. A student devises an electrochemical cell with the following cell notation:Cr (s) | Cr2+ (aq, 0.02 M) | | Co2+ (aq, 0.9 M) | Co (s)The student moni...

Solved • Mar 16, 2020

The Nernst Equation

Q. A student devises an electrochemical cell with the following cell notation:Cr (s) | Cr2+ (aq, 0.02 M) | | Co2+ (aq, 0.9 M) | Co (s)Calculate Δε for...

Solved • Mar 16, 2020

The Nernst Equation

Q. Consider a galvanic cell that uses the reaction4H3O+ (aq) + 4I- (aq) + O2 (g) → 2I2 (s) 6H2O (l).Complete the following sentence: An increase in pH...

Solved • Mar 16, 2020

The Nernst Equation

Q. The voltage generated by the zinc concentration cell described by,Zn(s) | Zn2+ (aq, 0.100 M) || Zn2+ (aq, ? M) | Zn(s)is 18.0 mV at 25°C.

Solved • Mar 13, 2020

The Nernst Equation

Q. The molar solubility for Hg2Br2 at 25 °C is 1.48 x 10-9 M and the standard reduction potential of Hg22+ is given below. Calculate the standard redu...

Solved • Jan 6, 2020

The Nernst Equation

Q. Briefly answer the following questions.Nobelium (No) is a radioactive metal element that does not occur naturally. Several experiments measuring th...

Solved • Jan 6, 2020

The Nernst Equation

Q. The value of E°cell for the reaction Zn(s) + Cu 2+(aq) <=> Zn 2+(aq) + Cu(s) is 1.10 V. What is the value of E for a cell in which [Cu 2+] = ...

Solved • Dec 19, 2019

The Nernst Equation

Q. The value of E°cell for the reaction Zn(s) + Cu2+(aq) <=> Zn2+(aq) + Cu(s) is 1.10 V. What is the value of E for a cell in which [Cu2+] = 1.0...

Solved • Dec 19, 2019

The Nernst Equation

Q. Which of the following changes will increase the voltage of the cell Al(s)|Al3+(aq, 1.00 M )||Cu2+(aq,1.00 M)|Cu(s)?I. Increasing the surface area ...

Solved • Dec 19, 2019

The Nernst Equation

Q. Ag+(aq) + e- → Ag(s)                       E° = +0.800 VAgBr(s) + e- → Ag(s) + Br-(aq)         E° = +0.071 VBr2(l) + 2 e- → 2 Br-(aq)              ...

Solved • Dec 19, 2019

The Nernst Equation

Q. Which of the following changes will increase the voltage of the cell Al(s)|Al3+ (aq, 1.00 M)||Cu2+ (aq, 1.00 M)|Cu(s)?I. Increasing the surface are...

Solved • Dec 17, 2019

The Nernst Equation

Q. Which of the following changes will increase the voltage of the cell Al(s)|Al3+(aq, 1.00 M)||Cu2+(aq,1.00 M)|Cu(s)?I. Increasing the surface area o...

Solved • Dec 16, 2019

The Nernst Equation

Q. Calculate the cell potential for the following reaction when the pressure of the oxygen gas is 2.50 atm, the hydrogen ion concentration is 0.10 mol...

Solved • Sep 1, 2019

The Nernst Equation

Q. For the following electrochemical cell Cu(s) | Cu 2+ (aq, 0.0155M) || Ag+ (aq, 3.50M) | Ag(s)Calculate the standard potential, E°, for this reactio...

Solved • Aug 12, 2019

The Nernst Equation

Q. The voltage generated by the zinc concentration cell described by,Zn(s)|Zn2+(aq, 0.100 M) || Zn2+(aq, ? M)|Zn(s)is 19.0 mV at 25°C. Calculate the c...

Solved • Aug 6, 2019

The Nernst Equation

Q. For the following electrochemical cell Cu(s) | Cu2+ (aq, 0.0155M) || Ag+ (aq, 3.50M) | Ag(s)Write the net cell equation. Phases are optional. Do no...

Solved • Aug 2, 2019

The Nernst Equation

Q. A Pb/Pb2+ concentration cell at 25°C has initial concentrations of 0.051 M Pb 2+ and 1.4 M Pb2+ at the anode and cathode. What is the concentration...

Solved • Aug 2, 2019

The Nernst Equation

Q. Consider a concentration cell similar to the one shown below, except that both electrodes are made of Ni and in the left-hand compartment [Ni2+] = ...

Solved • Jan 28, 2019

The Nernst Equation

Q. Consider a voltaic cell where the anode half-reaction is Zn(s)  →  Zn2+(aq) + 2 e- and the cathode half-reaction is Sn2+(aq) + 2 e–  →  Sn(s). What...

Solved • Jan 3, 2019

The Nernst Equation

Q. In the Nernst equation, what is the numerical value of the reaction quotient, Q, under standard conditions?

Solved • Jan 3, 2019

The Nernst Equation

Q. Indicate whether each of the following statements is true or false.If you double the concentrations of reagents in a voltaic cell, you will double ...

Solved • Jan 3, 2019

The Nernst Equation

Q. A voltaic cell is constructed froman Ni2 +  (aq) - Ni(s) half-cell andan Ag+ (aq) - Ag(s) half-cell.The initial concentration of Ni2 +  (aq) in the...

Solved • Jan 3, 2019

The Nernst Equation

Q. A voltaic cell is constructed that uses the following half-cell reactions:l Cu+ (aq) + e-  →  Cu(s)I2 (s) + 2e-  →  2I- (aq).The cell is operated a...

Solved • Jan 3, 2019

The Nernst Equation

Q. A voltaic cell is constructed with two silver-silver chloride electrodes, each of which is based on the following half-reaction:AgCl(s) + e-  →  Ag...

Solved • Jan 3, 2019

The Nernst Equation

Q. A voltaic cell is constructed with two silver-silver chloride electrodes, each of which is based on the following half-reaction:AgCl(s) + e-  →  Ag...

Solved • Jan 3, 2019

The Nernst Equation

Q. A voltaic cell utilizes the following reaction and operates at 298 K:3Ce4 +  (aq) + Cr(s)  →  3Ce3 +  (aq) + Cr3 +  (aq).What is the emf of this ce...

Solved • Jan 3, 2019

The Nernst Equation

Q. What is the effect on the emf of the cell shown in Figure 20.9 in the textbook, which has the overall reactionZn(s) + 2H+(aq)  →  Zn2+(aq) + H2(g),...

Solved • Jan 3, 2019

The Nernst Equation

Q. A voltaic cell is constructed with two Zn2 + - Zn electrodes. The two cell compartments have [Zn2 + ] = 1.8 M and [Zn2 + ] = 1.60×10−2 M ,...

Solved • Jan 3, 2019

The Nernst Equation

Q. A voltaic cell is constructed with two Zn2 +   - Zn electrodes. The two cell compartments have [Zn2 +  ] = 1.8 M and [Zn2 +  ] = 1.60×10−2 M , resp...

Solved • Jan 3, 2019

The Nernst Equation

Q. Consider the half reaction Ag+ ( aq ) + e-  →  Ag( s ).  Which of the lines in the following diagram indicates how the reduction potential varies w...

Solved • Jan 3, 2019

The Nernst Equation

Q. Consider the following half-reactions:IrCl63- + 3e- → Ir + 6Cl -         ε° = 0.77 VPtCl42- + 2e- → Pt + 4Cl -       ε° = 0.73 VPdCl42- + 2e- →Pd +...

Solved • Dec 4, 2018

The Nernst Equation

Q. An electrochemical cell consists of a silver metal electrode immersed in a solution with [Ag +] = 1.0 M separated by a porous disk from a copper me...

Solved • Dec 4, 2018

The Nernst Equation

Q. Consider the following galvanic cell at 25°C:Pt | Cr 2+  (0.30 M), Cr 3+ (2.0 M) | | Co 2+ (0.20 M) | CoThe overall reaction and equilibrium consta...

Solved • Dec 4, 2018

The Nernst Equation

Q. You have a concentration cell in which the cathode has a silver electrode with 0.10 M Ag+. The anode also has a silver electrode with Ag +(aq), 0.0...

Solved • Dec 4, 2018

The Nernst Equation

Q. Consider the cell described below:Zn | Zn 2+(1.00 M) ‖ Cu 2+(1.00 M) | CuCalculate the cell potential after the reaction has operated long enough f...

Solved • Dec 4, 2018

The Nernst Equation

Q. The overall reaction in the lead storage battery isPb(s) + PbO2 (s) + 2H +(aq) + 2HSO4 -(aq) → 2PbSO4 (s) + 2H2O(l)Calculate ε at 25°C for this bat...

Solved • Dec 4, 2018

The Nernst Equation

Q. Consider the concentration cell shown below. Calculate the cell potential at 25°C when the concentration of Ag+ in the compartment on the right is ...

Solved • Dec 3, 2018

The Nernst Equation

Q. Consider the concentration cell in Fig. 17‑10. If the Fe 2+ concentration in the right compartment is changed from 0.1 M to 1 x 10-7 M Fe2+, predic...

Solved • Dec 3, 2018

The Nernst Equation

Q. A galvanic cell is based on the following half-reactions at 25°C:Ag+ + e- → AgH2O2 + 2H+ + 2e- → 2H2OPredict whether Ecell is larger or smaller tha...

Solved • Dec 3, 2018

The Nernst Equation

Q. A voltaic cell consists of two H2/H+ half-cells. Half-cell A has H2 at 0.95 atm bubbling into 0.10 M HCl. Half-cell B has H2 at 0.60 atm bubbling i...

Solved • Nov 28, 2018

The Nernst Equation

Q. A voltaic cell with Ni/Ni 2+ and Co/Co2+ half-cells has the following initial concentrations: [Ni2+] = 0.80 M; [Co 2+] = 0.20 M.(a) What is the ini...

Solved • Nov 28, 2018

The Nernst Equation

Q. The Nernst equation can be applied to half-reactions. Calculate the reduction potential (at 25°C) of the half-cell Cu/Cu2+. (3.0 M). (The half-reac...

Solved • Jul 18, 2018

The Nernst Equation

Q. Given the measured cell potential, Ecell, is -0.3641 V at 25 °C in the following cell, calculate the H+ concentration Pt (s) | H2(g, 0.769 atm) | H...

Solved • May 29, 2018

The Nernst Equation

Q. A concentration cell consists of two Sn/Sn2+ half-cells. The cell has a potential of 0.15V at 25°C. What is the ratio of the Sn2+ concentrations in...

Solved • Mar 23, 2018

The Nernst Equation

Q. If there is an electrochemical cell and Q = 0.0010 and K = 0.10, which is true about Ecell and E°cell?a. Ecell is positive and E°cell is negativeb....

Solved • Mar 23, 2018

The Nernst Equation

Q. If there is an electrochemical cell and Q=0.0010 and K=0.10, which is true about Ecell and Eθcell?a. Ecell is positive and Eθcell is negativeb. Ece...

Solved • Mar 22, 2018

The Nernst Equation

Q. A voltaic cell is constructed as follows: Ag(s) | Ag+(satdAg 2CrO4) || Ag+( 0.110 M ) | Ag(s) What is the value of Ecell? For Ag2CrO4, Ksp = 1.1 × ...

Solved • Mar 16, 2018

The Nernst Equation

Q. Calculate the standard potential, E°, for this reaction from its equilibrium constant at 298 K.X(s) + Y2+(aq) ⇌ X2+(aq) + Y(s)   K= 9.49 x 105

Solved • Mar 15, 2018

The Nernst Equation

Q. Calculate the standard potential, E°, for this reaction from its equilibrium constant at 298 K.X(s) + Y3+(aq) ⇌ X3+(aq) + Y(s)          K= 2.12 x 1...

Solved • Mar 13, 2018

The Nernst Equation

Q. The voltage generated by the zinc concentration cell described by,Zn(s)|Zn2+ (aq, 0.100 M)||Zn2+ (aq, ? M)|Zn(s)is 18.0 mV at 25°C. Calculate the c...

Solved • Jan 4, 2018

The Nernst Equation

Q. Complete this table relating the values of Ecell and ΔG to the Q/K ratio. 

Solved • Dec 18, 2017

The Nernst Equation

Q. What is the ratio of products to reactants for a dead battery in a NaAl cell?1) about 10532) 533) about 101064) about 10-106

Solved • Apr 12, 2017

The Nernst Equation

Q. What is the cell potential of the cell described with shorthand notation below?Mg(s) I Mg+2(aq,10-3 M) II Al+3(aq,0.1 M) I Al(s)1) -0.7 V2) 0.7 V3)...

Solved • Apr 12, 2017

The Nernst Equation

Q. Which of the value of Q is most reasonable as you throw your dead alkaline battery into the recycling bin?1) 10402) 13) 10-404) 405) -40

Solved • Apr 12, 2017

The Nernst Equation

Q. What is the Ecell for Mg(s) I Mg2+(aq)(0.15 M) II Au+(aq)(0.3 M) I Au(s) ? Assume that the number of electrons transferred in the reaction is n = 2...

Solved • Apr 7, 2017

The Nernst Equation

Q. What is the equilibrium constant for the reaction taking place at room temperature (T = 25°C) in the battery Zn(s) I Zn2+(aq) II Ce4+(aq) I Ce3+(aq...

Solved • Apr 7, 2017

The Nernst Equation

Q. For the reaction:                                     Sn    4+(aq)+  2 Cu+(aq)  →   2 Cu2+(aq)+  Sn2+(aq) If the concentrations of the reactants ...

Solved • Nov 16, 2016

The Nernst Equation

Q. An electrochemical cell has the following half cell reactions: Cu2+(aq) +2e- → Cu(s)          E°1/2 = +0.34 Zn2+(aq) + 2e- → Zn(s)          E°1/2 ...

Solved • Aug 29, 2016

The Nernst Equation

Q. Consider this reaction.Sn2+ (aq) + 2 Fe3+ (aq) → Sn4+ (aq) + 2 Fe2+ (aq)     E° = 0.617 VWhat is the value of E when [Sn2+] and {Fe3+] are equal to...

Solved • May 10, 2016

The Nernst Equation

Q. Consider this reaction.  4 e – + 4 H+ (aq) + O2 (g) ⇌ 2 H2O (l)     E° = 1.23 V Which statement is true if the hydrogen ion concentration is init...

Solved • Apr 26, 2016

The Nernst Equation

Q. An electrochemical cell is constructed using the half-reactions given in the table below. A. What is the overall chemical equation for the  sponta...

Solved • Apr 18, 2016

The Nernst Equation

Q. To what pH should you adjust a standard hydrogen electrode to get an electrode potential of –0.122 V? (Assume that the partial pressure of hydrogen...

Solved • Apr 8, 2016

The Nernst Equation

Q. An MnO2(s)/Mn2+(aq) electrode in which the pH is 10.24 is prepared. Find the [Mn 2+] necessary to lower the potential of the half-cell to 0.00 V (a...

Solved • Apr 8, 2016

The Nernst Equation

Q. A battery relies on the oxidation of magnesium and the reduction of Cu 2+. The initial concentrations of Mg2+ and Cu2+ are 1.0 x 10–4 M and 1.5 M, ...

Solved • Apr 8, 2016

The Nernst Equation

Q. The cell potential of this electrochemical cell depends on the gold concentration in the cathode half-cell. Pt(s) | H2(g, 1.0 atm) | H+(aq, 1.0 M)...

Solved • Apr 8, 2016

The Nernst Equation

Q. The cell potential of this electrochemical cell depends on the pH of the solution in the anode half-cell. Pt(s) | H2(g, 1 atm) | H+(aq,? M) || Cu2...

Solved • Apr 8, 2016

The Nernst Equation

Q. A Cu/Cu2+ concentration cell has a voltage of 0.22 V at 25°C. The concentration of Cu2+ in one of the half-cells is 1.5 X 10–3 M. What is the conce...

Solved • Apr 8, 2016

The Nernst Equation

Q. A concentration cell consists of two Sn/ Sn2+ half-cells. The cell has a potential of 0.10 V at 25°C. What is the ratio of the Sn2+ concentrations ...

Solved • Apr 8, 2016

The Nernst Equation

Q. A voltaic cell consists of a Pb/ Pb2+ half-cell and a Cu/Cu2+ half-cell at 25°C. The initial concentrations of Pb2+ and Cu2+ are 0.0500 M and 1.50 ...

Solved • Apr 8, 2016

The Nernst Equation

Q. A voltaic cell consists of a Pb/ Pb2+ half-cell and a Cu/Cu2+ half-cell at 25°C. The initial concentrations of Pb2+ and Cu2+ are 0.0500 M and 1.50 ...

Solved • Apr 8, 2016

The Nernst Equation

Q. A voltaic cell employs the redox reaction: 2Fe3+(aq) + 3Mg(s) → 2Fe(s) + 3Mg2+(aq). Calculate the cell potential at 25°C under each set of conditi...

Solved • Apr 8, 2016

The Nernst Equation

Q. A voltaic cell employs the redox reaction: 2Fe3+(aq) + 3Mg(s) → 2Fe(s) + 3Mg2+(aq). Calculate the cell potential at 25°C under each set of conditi...

Solved • Apr 8, 2016

The Nernst Equation

Q. A voltaic cell employs the redox reaction: 2Fe3+(aq) + 3Mg(s) → 2Fe(s) + 3Mg2+(aq) Calculate the cell potential at 25°C under each set of conditio...

Solved • Apr 8, 2016

The Nernst Equation

Q. Consider a standard voltaic cell based on the reaction: 2 H+ (aq) + Sn (s) → Sn2+ (aq) + H2 (g) Which of the following actions would change the e...

Solved • Apr 1, 2016

The Nernst Equation

Q. The standard emf for the cell with the following overall cell reaction is +0.48 V:  Zn (s) + Ni2+(aq) → Zn2+ (aq) + Ni (s)   What is the emf gen...

Solved • Apr 1, 2016

The Nernst Equation

Q. Consider the redox reaction: PbO2(s)  +  Ba(s)  +  4H+ (aq)  →  Pb+2 (aq)  +  Ba +2 (aq) + 2H2O(l)  At standard conditions ε° = 4.36 V (highly sp...

Solved • Mar 17, 2016

The Nernst Equation

Q. Calculate the cell potential for the following reaction that takes place in an electrochemical cell at 25 degrees C. Sn(s) │ Sn2+ (aq, 0.022M) ║ A...

Solved • Mar 16, 2016

The Nernst Equation

Q. Consider the following electrochemical cell for the question: Pt / KBr(aq, 0.01 M), Br2(l) // FeBr2(aq, 1.0M) / Fe What is the name of the ionic ...

Solved • Mar 15, 2016