Constants I Periodic Table Part A The Nernst equation is one of the most importa
ID: 1026727 • Letter: C
Question
Constants I Periodic Table Part A The Nernst equation is one of the most important equations in electrochemistry. To calculate the cell potential at non-standard-state conditions, the equation is For the reaction 20o(an) t2 what is the cell potential at 25 °Cif the co 0.877 M, and [Ch]-0.100 M? Express your answer with the appropri > View Available Hintfs) E-Eo _ 2.303 RT logo Q 0g10 nF where E is the potential in volts, E is the standard potential in volts, R is the gas constant, T is the temperature in kelvins, n is the number of moles of electrons transferred, F is the Faraday constant, and Qis the reaction quotient. At standard temperature, 25 C or 298 K, the equation has the form 0.0592) log Q : E= Value E-Bo-( Units The reaction quotient has the usual form Submit products reactants) A table of standard reduction potentials gives the voltage at standard conditions, 1.00 M for all solutions and 1.00 atm for all gases. The Nernst equation allows for the calculation of the cell potential E at other conditions of concentration and pressure Provide FeedtExplanation / Answer
Part A)
for the given reaction,
Ecell = Eo - 0.0592/n log([Co2+]^2.[Cl2]/[Co3+]^2.[Cl-]^2)
Eo = 0.483 V
n = 2
feeding concentration values,
Ecell = 0.483 - 0.0592/2 log[(0.540)^2.(0.1)/(0.152)^2.(0.877)^2]
= 0.477 V
So the cell potential would be = 0.477 V