Free-energy change, AGº, is related to cell potential, Eº, by the equation AGⓇ = -nFE° where n is the number of moles of electrons transferred and F = 96,500 C/(mol e) is the Faraday constant. When Eis measured in volts, AGⓇ must be in joules since 1 J=1C.V. Part B Calculate the standard cell potential at 25°C for the reaction X(s) + 2Y+ (aq) →X2(aq) + 2Y(s) where AH° = -683 kJ and AS - -303 J/K Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) НА © 2 D E Value Units Submit
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 E=E - 2.908 RF log10 RT PI Q where is the potential in volts Eis the standard potential in volts, R is the gas constant, I is the temperature in kelvins, n is the number of moles of electrons transferred, F is the Faraday constant, and is the reaction quotient. Using the common reference temperature, 25 or 298 K. the equation has the form E-Eº - (0.0622) logo - The reaction quotient has the usual form Q productif reactant A table of standard reduction potentials gives the voltage at standard conditions, 1,00 M for all solutions and 100 atm for all gases. The Nemst equation allows for the calculation of the cell potential at other conditions of concentration and pressure Part A For the reaction 2CO3+ (aq) + 2C1- (aq) 2Co2+ (aq) + Cl2(g). E= 0.483 V what is the cell potential at 25 °C it the concentrations are (Co3+1 = 7.00x10-3 M. (Co2+1 0.846 M and (CIC) = 0.890 M, and the pressure of Clz is Pal = 3.10 atm ? Express your answer with the appropriate units. View Available Hint(s) HA ? E- Value Units Focus nited States)
Free-energy change, AGº, is related to cell potential, Eº, by the equation AGⓇ = -nFE° where n is the number of moles of
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Free-energy change, AGº, is related to cell potential, Eº, by the equation AGⓇ = -nFE° where n is the number of moles of
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