Quiz for Nernst equation

Q1: What is the Nernst equation used for?

A. Measuring temperature B. Determining entropy C. Calculating cell potential under non-standard conditions D. Determining atomic number

Q2: Which constant is used in the Nernst equation?

A. Planck’s constant B. Boltzmann constant C. Avogadro’s number D. Universal gas constant

Q3: At 25°C, what is the simplified form of the Nernst equation?

A. E = E° + 0.059/n log [products]/[reactants] B. E = E° − 0.059/n log [products]/[reactants] C. E = E° + 0.059n log [reactants]/[products] D. E = E° − 0.059n log [products]/[reactants]

Q4: In the Nernst equation, what does “n” represent?

A. Temperature B. Moles of gas C. Number of electrons transferred D. Molarity of solution

Q5: What is the cell potential when concentrations are standard?

A. Zero B. 1.0 V C. Equal to E° D. Negative

Q6: Which of the following affects Ecell in Nernst equation?

A. Pressure only B. Temperature only C. Concentration of ions D. Electronegativity

Q7: As concentration of product increases, Ecell will:

A. Increase B. Decrease C. Stay the same D. Become zero

Q8: What is Q in the Nernst equation?

A. Reaction quotient B. Heat energy C. Charge D. Pressure

Q9: What happens to Ecell if temperature increases?

A. Increases indefinitely B. Decreases to zero C. Can increase or decrease D. No change

Q10: For a redox reaction with n=2, how does n affect E?

A. E is multiplied by n B. n doesn’t matter C. E is divided by n D. E is inversely related to n

Q11: Which unit is used for Ecell?

A. Ohm B. Volt C. Coulomb D. Ampere

Q12: Ecell becomes zero when:

A. Q = 1 B. Q = ∞ C. Q = K D. Q = 0

Q13: Log in Nernst equation is to base:

A. e B. 10 C. 2 D. None

Q14: Which electrode potential is used in Nernst?

A. Actual potential B. Standard potential C. Half-cell potential D. Overpotential

Q15: The constant 0.059 is derived assuming:

A. Standard pressure B. 25°C C. Standard volume D. Infinite dilution

Q16: Which metal acts as a reference electrode?

A. Zinc B. Copper C. Hydrogen D. Iron

Q17: In a cell Zn | Zn²⁺ || Cu²⁺ | Cu, what is oxidized?

A. Zinc B. Copper C. Zinc ion D. Copper ion

Q18: In the same cell, what is reduced?

A. Zinc B. Zinc ion C. Copper D. Copper ion

Q19: F in Nernst stands for:

A. Faraday constant B. Frictional coefficient C. Formation constant D. Flux rate

Q20: Nernst equation is not valid for:

A. Dilute solutions B. Ionic compounds C. Concentrated non-ideal solutions D. Standard solutions