Write the Nernst equation for a galvanic cell corresponding to the reaction:
$Zn (s) + {Cu}^{2 +} (aq) \to Zn (aq) + Cu (s)$

Solution

$Zn (s) + {Cu}^{2 +} (aq) \to Zn (aq) + Cu (s)$
In Daniell cell, the electrode potential for any given concentration of
Cu²⁺ and Zn²⁺ ions, we write
For cathode:-
$E_{\frac{{Cu}^{2 +}}{Cu}} = E_{\frac{{Cu}^{2 +}}{Cu}}^{0} - \frac{RT}{2 F} In \frac{1}{{Cu}^{2 +}} For anode : - E_{\frac{{Zn}^{2 +}}{Zn}} = E_{\frac{{Zn}^{2 +}}{Zn}}^{0} - \frac{RT}{2 F} In \frac{1}{{Zn}^{2 +}} thus nernst equation is : E_{cell} = E_{cell}^{0} - \frac{RT}{nF} \ln \frac{[{Zn}^{2 +}]}{[{Cu}^{2 +}]}$

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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Electrochemistry

Write the Nernst equation for a galvanic cell corresponding to the reaction:
$Zn (s) + {Cu}^{2 +} (aq) \to Zn (aq) + Cu (s)$

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.

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

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For Daily Free Study Material Join wiredfaculty

Electrochemistry

Write the Nernst equation for a galvanic cell corresponding to the reaction:Zn(s) + Cu2+(aq) → Zn(aq) + Cu(s)

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

Write the Nernst equation for a galvanic cell corresponding to the reaction:
$Zn (s) + {Cu}^{2 +} (aq) \to Zn (aq) + Cu (s)$

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-?