Nernst Equation

Chemistry ⇒ Redox Reactions and Electrochemistry

Nernst Equation starts at 12 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Nernst Equation. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.

See sample questions for grade 12

A cell has Ecell = 0.00 V at equilibrium. What does this indicate about the concentrations of reactants and products?

At 25°C, what is the value of the constant (RT/F) in the Nernst equation, in volts?

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.

A cell has E°cell = 1.10 V and n = 2. Calculate the equilibrium constant (K) at 25°C.

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.

The Nernst equation relates the cell potential to which of the following? (1) Temperature (2) Concentration of ions (3) Pressure (4) All of the above

Which of the following best describes the reaction quotient (Q) in the Nernst equation? (1) Ratio of product concentrations to reactant concentrations, each raised to the power of their coefficients (2) The number of electrons transferred (3) The standard electrode potential (4) The temperature in Kelvin

Which of the following is NOT a factor in the Nernst equation? (1) Standard electrode potential (2) Number of electrons transferred (3) Molar mass of the electrode (4) Temperature

Which of the following is NOT a limitation of the Nernst equation? (1) Assumes ideal behavior (2) Cannot be used for non-aqueous solutions (3) Does not account for activity coefficients (4) Assumes constant temperature

Fill in the blank: For a hydrogen electrode, the Nernst equation can be written as E = 0 - 0.0591 × ________.

Fill in the blank: In a concentration cell, the cell potential depends only on the ________ of the ions involved.

Fill in the blank: In the Nernst equation, the activity of a pure solid or liquid is taken as ________.

Fill in the blank: In the Nernst equation, the term ________ represents the number of electrons transferred in the redox reaction.

True or False: The Nernst equation can be applied to both galvanic and electrolytic cells.

True or False: The Nernst equation can be used for redox reactions involving gases.

True or False: The Nernst equation can be used to calculate the cell potential at any temperature.

True or False: The Nernst equation can be used to calculate the pH of a solution using a hydrogen electrode.