Nernst Equation
Chemistry ⇒ Redox Reactions and Electrochemistry
Nernst Equation starts at 12 and continues till grade 12.
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See sample questions for grade 12
A cell has E°cell = 1.10 V and n = 2. Calculate the equilibrium constant (K) at 25°C.
A cell has Ecell = 0.00 V at equilibrium. What does this indicate about the concentrations of reactants and products?
A cell is constructed with the following half-cells: Pb²⁺(1.0 M)/Pb(s) and Fe²⁺(0.10 M)/Fe(s). E°(Pb²⁺/Pb) = -0.13 V, E°(Fe²⁺/Fe) = -0.44 V. Calculate the cell potential at 25°C.
A concentration cell is set up with Zn²⁺ concentrations of 1.0 M and 0.01 M at 25°C. Calculate the cell potential. (E°(Zn²⁺/Zn) = -0.76 V)
A hydrogen electrode is immersed in a solution of pH 4. Calculate its electrode potential at 25°C.
At 25°C, what is the value of the constant (RT/F) in the Nernst equation, in volts?
Calculate the cell potential at 25°C for the cell: Cu(s) | Cu²⁺(0.01 M) || Ag⁺(1.0 M) | Ag(s). Given: E°(Cu²⁺/Cu) = +0.34 V, E°(Ag⁺/Ag) = +0.80 V.
Calculate the electrode potential for the half-cell reaction Zn²⁺ + 2e⁻ → Zn(s) at 25°C, if [Zn²⁺] = 0.01 M and E° = -0.76 V.
Describe how the Nernst equation changes if the temperature is not 25°C.
Describe the effect of increasing the concentration of reactants on the cell potential according to the Nernst equation.
Explain how the Nernst equation is used to calculate the equilibrium constant (K) for a redox reaction.
Explain why the Nernst equation includes the logarithm of the reaction quotient.
Explain why the Nernst equation is important in biological systems.
For the half-cell reaction Fe³⁺ + e⁻ → Fe²⁺, E° = +0.77 V. Calculate the electrode potential at 25°C if [Fe³⁺] = 0.10 M and [Fe²⁺] = 1.0 M.
If the concentration of the oxidized form increases, what happens to the electrode potential according to the Nernst equation?
If the temperature increases, what happens to the value of the term (RT/nF) in the Nernst equation?
State the general form of the Nernst equation for a half-cell reaction.
The Nernst equation is derived from which fundamental thermodynamic relationship?
What is the Nernst equation used for in electrochemistry?
A cell operates at 40°C instead of 25°C. How does this affect the value of the (RT/nF) term in the Nernst equation, and what is the implication for the cell potential?
