Why is the equilibrium constant k related to only E°_cell and not E_cell.

Solution

Nernst equation is given as:
E_cell = $E_{cell}^{°} - \frac{RT}{nF} InQ$
Where Q reaction quotient
E_cell is the cell potential at the temperature of interest.
$E_{cell}^{0}$ is the standard cell potential
R is the universal gas constant
T is the abolute temperture
F is the Farday constant
n i the number of electron
At equilibrium
E_cell =0 and Q=k
K isthe equilibrium constant

0= $E_{cell}^{°} - \frac{RT}{nF} In k$

$In k = \frac{{nFE}_{cell}^{0}}{RT}$

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Electrochemistry

Why is the equilibrium constant k related to only E°_cell and not E_cell.

Some More Questions From Electrochemistry Chapter

Why does the conductivity of a solution decrease with dilution?

Suggest a way to determine the Λ°_m value of water.

The molar conductivity of 0.025 mol L^–1methanoic acid is 46.1 S cm² mol^–1. Calculate its degree of dissociation and dissociation constant. Give λ°(H⁺) = 349.6 S cm²mol^–1 and λ° (HCOO^– ) = 54.6 s cm² mol^–1.

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For Daily Free Study Material Join wiredfaculty

Electrochemistry

Why is the equilibrium constant k related to only E°cell and not Ecell.

Some More Questions From Electrochemistry Chapter

Why does the conductivity of a solution decrease with dilution?

Suggest a way to determine the Λ°m value of water.

The molar conductivity of 0.025 mol L–1 methanoic acid is 46.1 S cm2 mol–1. Calculate its degree of dissociation and dissociation constant. Give λ°(H+) = 349.6 S cm2 mol–1 and λ° (HCOO– ) = 54.6 s cm2 mol–1.

If the current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons flow through the wire?

Suggest a list of metals that are extracted electrolytically.

Consider the reaction: Cr2O72– + 14H+ + 6e- → 2Cr3+ + 8H2OWhat is the quantity of electricity in coulombs needed to reduce 1 mol of Cr2O72-?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Why is the equilibrium constant k related to only E°_cell and not E_cell.

Suggest a way to determine the Λ°_m value of water.

The molar conductivity of 0.025 mol L^–1methanoic acid is 46.1 S cm² mol^–1. Calculate its degree of dissociation and dissociation constant. Give λ°(H⁺) = 349.6 S cm²mol^–1 and λ° (HCOO^– ) = 54.6 s cm² mol^–1.

Consider the reaction: Cr₂O₇^2– + 14H⁺ + 6e- → 2Cr³⁺ + 8H₂O
What is the quantity of electricity in coulombs needed to reduce 1 mol of Cr₂O₇^2-?