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Charles , -) ? fi https://learn.vccs.edu/bbcswebdav/pid-114991424-dt-content-rid-243578735-2/courses/GC297.CHM.112.w01.SU18/GC297.CHM.112.W01.SU...Q?|q- :: Apps D Credit Card Accoun: LG HOME-myGCC * Late Nite Labs G FOREVER CHORDS b LG HOME-myNVCC 576 Online Banking-Un Course selected, pl ?VCU-Central Authe Model 3 Nernst Equation: For electrochemistry at non-std conditions Recall: Std conditions 1 [M] or P 1 atm RT AE=AE.RT nF AE.AE.. ' ( D en O nF react AE°-0.0257 0.0592 log,n AE in o 6. Analyze the Nernst equation given above and answer the following questions a) what happens to the overall cell potential ?E when the concentration of a product is increased? Explain your answer b) what happens to the overall cell potential ?? when the concentration of a reactant is increased? Explain your answer c) Given AE for a particular cell, would it be possible to calculate the concentration of a certain soluble species in the anode compartment? If so, explain how this can be done and determine what other information is needed Continued on the next nnge

Explanation / Answer

Ans 6

Part a

When concentration of products > concentration of reactants

ln Q > 0

and The term ( 0.0257/n)*lnQ will increase but due to negative sign attached with it, overall cell potential will decrease.

Part b

When concentration of reactants > concentration of products

ln Q < 0

The term ( 0.0257/n)*lnQ will decrease but due to negative sign attached with it, overall cell potential will increase.

Part C

Yes, it is possible to calculate the concentration of certain soluble species in the anode compartment.

From the Nernst equation

E = E° - ( 0.0257/n)*lnQ

E = E° - ( 0.0257/n)*ln [1/concentration of species]

E is known

E°= standard reduction potential of species is known

n = number of electrons is known

concentration of species can be calculated.

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