Question

In: Chemistry

A galvanic cell consists of a iron electrode in 1 M Fe(NO3)2 and a copper electrode...

A galvanic cell consists of a iron electrode in 1 M Fe(NO3)2 and a copper electrode in 1 M Cu(NO3)2. What is the equilibrium constant for this reaction at 25oC? Enter you answer with 2 significant digits, using the syntax of "1.0x10(22)" for "1.0x1022"

Solutions

Expert Solution

Fe(s)/Fe(NO3)2 (aq) // Cu(NO3)2 (aq)/Cu

Fe------------------> Fe+2 + 2e-         E0 = 0.41V

Cu+2 +2e- --------> Cu(s)                 E0 = 0.34V

--------------------------------------------------------------------

Fe(s) + Cu+2 (aq) -------> Fe+2 (aq) + Cu(s)       E0cell = 0.75V

     n = 2

   G0   = -nE0cell*F

               = -2*0.75*96500   = -144750J

G0     = -RTlnKc

-144750 = -8.314*298*2.303logKC

logKc     = -144750/-5705.8483

logKc   = 25.37

Kc       = 10^25.37    = 2.35*10^25 >>> answer

             

queen_honey_blossom answered 1 year ago
Next > < Previous

Related Solutions

A galvanic cell consists of a iron electrode in 1 M Fe(NO3)2 and a copper electrode...
A galvanic cell consists of a iron electrode in 1 M Fe(NO3)2 and a copper electrode in 1 M Cu(NO3)2. What is the equilibrium constant for this reaction at 25oC? Enter you answer with 2 significant digits, using the syntax of "1.0x10(22)" for "1.0x1022 What is the cell potential (emf, in V) of this cell at 25oC? Cu |Cu2+ (0.0510 M) ‖ Br2 |Br- (0.363 M) What mass (in g) of aluminum can be electroplated when 0.855 amps are used...
A galvanic cell consists of a lead electrode in 0.0256 M Pb(NO3)2 and a aluminum electrode...
A galvanic cell consists of a lead electrode in 0.0256 M Pb(NO3)2 and a aluminum electrode in 0.292 M Al(NO3)3. What is the cell potential (emf, in V) of this cell at 25oC?
A galvanic cell consists of a standard hydrogen electrode and a copper electrode. Suppose that the...
A galvanic cell consists of a standard hydrogen electrode and a copper electrode. Suppose that the copper electrode is immersed in a solution that is 0.1 M NaOH and that it is saturated with Cu(OH)2. Find the cell potential?
An electrochemical cell, composed of an iron electrode (anode) immersed in 0.10 M Fe (NO3)2 and...
An electrochemical cell, composed of an iron electrode (anode) immersed in 0.10 M Fe (NO3)2 and silver electrode (cathode) immersed in 0.11M AgNO3, was found to have a cell potential of 1.21V. The standard reduction potential for Ag+ / Ag half-cell is +0.80V. The standard reduction potential for the Fe+2/ Fe half – cell is -0.45V. 1. Write the half-cell reaction at the anode. 2.Write the half –cell reaction at the Cathode 3.Write over all cell reaction 4. Determine the...
A galvanic cell consists of a mercury (Hg) electrode immersed in 0.26 L of 0.105 M...
A galvanic cell consists of a mercury (Hg) electrode immersed in 0.26 L of 0.105 M Hg2+ solution and a silver (Ag) electrode immersed in 0.74 L of 1.44 M Ag+ solution. The galvanic cell is allowed to discharge at 25 °C until equilibrium is reached. What is the concentration of Hg2+ at equilibrium? Data:   E° (V) Hg2+ + 2 e− → Hg(l)        0.854 Ag+ + e− → Ag(s) 0.800 Round your answer to two significant figures.
A galvanic (voltaic) cell consists of an electrode composed of nickel in a 1.0 M nickel(II)...
A galvanic (voltaic) cell consists of an electrode composed of nickel in a 1.0 M nickel(II) ion solution and another electrode composed of gold in a 1.0 M gold(III) ion solution, connected by a salt bridge. Calculate the standard potential for this cell at 25 °C. ____V 2)Consider these two entries from a fictional table of standard reduction potentials. X2+ + 2e- => X(s) E=2.26 V Y2+ + 2e- => Y(s) E=0.14 V Which pair of species would react under...
Consider a galvanic cell that consists of a Ni^2+/Ni half-cell and a standar hydrogen electrode. The...
Consider a galvanic cell that consists of a Ni^2+/Ni half-cell and a standar hydrogen electrode. The concentration of Ni^2+ is 0.1M, the pressure of H2 is 1atm and the concentration of H+ is 0.05M. A. write a balanced reaction for the cell. B. what is the oxidizing and reducing agent? C. Calculate the Eo cell D. Calculate the Ecell E. Is the reaction spontaneous under these conditions?
A magnesium electrode in 1 M MgSO4 and an iron electrode in 1 M FeSO4 are...
A magnesium electrode in 1 M MgSO4 and an iron electrode in 1 M FeSO4 are in electrical contact forming a galvanic cell. Determine the direction the electrons flow, write the reaction that occurs at the cathode and the reaction that occurs at the anode and finally determine the total emf for the reaction.
A galvanic cell Fe(s)|Fe2+(aq) || Pb2+(aq)|Pb(s) is constructed using a completely immersed Fe electrode that weighs...
A galvanic cell Fe(s)|Fe2+(aq) || Pb2+(aq)|Pb(s) is constructed using a completely immersed Fe electrode that weighs 35.6 g and a Pbelectrode immersed in 510 mL of 1.00 M Pb2+(aq) solution. A steady current of 0.0672 A is drawn from the cell as the electrons move from the Fe electrode to the Pb electrode. (a) Which reactant is the limiting reactant in this cell? Enter symbol (b) How long does it take for the cell to be completely discharged? -------- s...
In a galvanic cell, one half-cell consists of a lead strip dipped into a 1.00 M...
In a galvanic cell, one half-cell consists of a lead strip dipped into a 1.00 M solution of Pb(NO3)2. In the second half-cell, solid neodymium is in contact with a 1.00 M solution of Nd(NO3)3. Pb is observed to plate out as the galvanic cell operates, and the initial cell voltage is measured to be 2.197 V at 25°C. (a) Write balanced equations for the half-reactions at the anode and the cathode. Show electrons as e-. Use the smallest integer...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT