CH 18: Relation of current and potential difference to rate and equilibrium
46 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What happens to the cell potential (V_cell) as the reaction proceeds towards equilibrium?

  • The cell potential first increases and then decreases.
  • The cell potential remains constant.
  • The cell potential decreases. (correct)
  • The cell potential increases.

What is the value of the cell potential (V_cell) at equilibrium?

  • V_cell is equal to 0 at equilibrium. (correct)
  • V_cell is less than 0 at equilibrium.
  • V_cell can have any value at equilibrium.
  • V_cell is greater than 0 at equilibrium.

How can the decrease in V_cell be used in practical applications?

  • To predict the remaining life of a battery.
  • To measure the efficiency of an electrochemical process.
  • To control the rate and extent of an electrochemical reaction.
  • All of the above. (correct)

What is the relationship between the cell potential (V_cell) and the ongoing chemical changes within the cell?

<p>V_cell is a crucial parameter that reflects the ongoing chemical changes within the cell. (B)</p> Signup and view all the answers

What is the primary purpose of understanding the relationship between V_cell and the chemical changes in the cell?

<p>All of the above. (D)</p> Signup and view all the answers

What happens to the potential difference (V_cell) of a galvanic cell as it operates?

<p>It decreases due to the consumption of reactants and generation of products (C)</p> Signup and view all the answers

What is the relationship between the potential difference (V_cell) and the concentration of products in a galvanic cell?

<p>As the concentration of products increases, V_cell decreases (B)</p> Signup and view all the answers

What is the value of the potential difference (V_cell) when a galvanic cell reaches equilibrium?

<p>V_cell is zero (D)</p> Signup and view all the answers

What is the reason for the potential difference (V_cell) being zero at equilibrium in a galvanic cell?

<p>There is no driving force for the reaction (C)</p> Signup and view all the answers

What is the qualitative relationship between the potential difference (V_cell) and the concentrations of reactants and products before equilibrium in a galvanic cell?

<p>A high concentration of reactants and low concentration of products result in a higher V_cell (A)</p> Signup and view all the answers

As the galvanic cell reaction progresses, how does the cell potential (V_cell) change?

<p>V_cell decreases as reactants are consumed and products are formed (A)</p> Signup and view all the answers

What is the primary factor that determines the magnitude of the cell potential (V_cell) in a galvanic cell?

<p>The difference in chemical composition between the reactants and products (B)</p> Signup and view all the answers

In a galvanic cell, what is the relationship between the concentration of products and the cell potential (V_cell)?

<p>V_cell decreases as the concentration of products increases (B)</p> Signup and view all the answers

What is the driving force for the galvanic cell reaction when the cell potential (V_cell) is at its maximum?

<p>The driving force is highest when V_cell is at its maximum (B)</p> Signup and view all the answers

When a galvanic cell reaches equilibrium, what is the value of the cell potential (V_cell)?

<p>V_cell is equal to zero (A)</p> Signup and view all the answers

What is the significance of understanding the relationship between V_cell and the chemical composition of a galvanic cell?

<p>It is a cornerstone of electrochemical cell behavior and essential for practical applications (C)</p> Signup and view all the answers

In a galvanic cell, what happens to the cell potential (V_cell) as the concentration of reactants decreases?

<p>V_cell decreases (C)</p> Signup and view all the answers

Which statement best describes the relationship between the cell potential (V_cell) and the progress of the galvanic cell reaction?

<p>V_cell is inversely proportional to the extent of the reaction (B)</p> Signup and view all the answers

Before a galvanic cell reaches equilibrium, what is the qualitative relationship between V_cell and the concentrations of reactants and products?

<p>A high concentration of reactants and a low concentration of products result in a higher V_cell (D)</p> Signup and view all the answers

What is a practical application of monitoring the potential difference (V_cell) in a galvanic cell?

<p>Predicting the remaining usable life of a battery (B)</p> Signup and view all the answers

How can galvanic cells be utilized as chemical sensors?

<p>By tracking changes in the cell potential (V_cell) based on ion concentrations (A)</p> Signup and view all the answers

In industrial electrochemical processes, why is monitoring the potential difference (V_cell) important?

<p>To ensure optimal product yield and energy efficiency (D)</p> Signup and view all the answers

What is the significance of the potential difference (V_cell) reaching zero at equilibrium in a galvanic cell?

<p>It means that the cell can no longer do electrical work (C)</p> Signup and view all the answers

What is the primary reason for understanding the relationship between the potential difference (V_cell) and the chemical changes within a galvanic cell?

<p>To design and operate batteries, sensors, and industrial processes more effectively (C)</p> Signup and view all the answers

As a galvanic cell approaches equilibrium, what happens to the concentrations of reactants and products?

<p>Reactant concentration decreases, and product concentration increases (A)</p> Signup and view all the answers

What is the qualitative relationship between the potential difference (V_cell) and the concentrations of reactants and products before equilibrium in a galvanic cell?

<p>Higher V_cell corresponds to higher reactant and lower product concentrations (A)</p> Signup and view all the answers

What is the primary reason for the decrease in the potential difference (V_cell) as a galvanic cell operates?

<p>The conversion of chemical energy into electrical energy (B)</p> Signup and view all the answers

What is the significance of understanding the relationship between the potential difference (V_cell) and the chemical changes in a galvanic cell?

<p>It provides a valuable tool for monitoring and controlling electrochemical processes (D)</p> Signup and view all the answers

What is the primary advantage of using galvanic cells as chemical sensors?

<p>They can measure the concentration of specific ions based on changes in V_cell (C)</p> Signup and view all the answers

What happens to the potential difference (V_cell) in a galvanic cell as reactants are consumed and products are generated?

<p>Decreases (B)</p> Signup and view all the answers

At equilibrium in a galvanic cell, what does a V_cell value of zero indicate?

<p>No chemical changes occurring (B)</p> Signup and view all the answers

How do increasing product ion concentrations affect the potential difference (V_cell) in a galvanic cell?

<p>Decreases V_cell (D)</p> Signup and view all the answers

What happens to the potential difference (V_cell) of a galvanic cell when reactant ion concentrations decrease?

<p>Decreases (C)</p> Signup and view all the answers

What is the significance of V_cell being 'flat' or 'dead' at equilibrium in a galvanic cell?

<p>Cell is inactive (C)</p> Signup and view all the answers

In a galvanic cell, what is the relationship between the concentration of reactant ions and V_cell before reaching equilibrium?

<p>Directly proportional (D)</p> Signup and view all the answers

How does the V_cell value change as a galvanic cell progresses towards equilibrium?

<p>Decreases exponentially (D)</p> Signup and view all the answers

What effect do low product ion concentrations have on the potential difference (V_cell) in a galvanic cell?

<p>Increases V_cell (B)</p> Signup and view all the answers

At the start of a galvanic cell operation, why is the potential difference (V_cell) at its maximum?

<p>Reactants at initial concentrations (A)</p> Signup and view all the answers

Which of the following best describes the relationship between the cell potential ($V_{cell}$) and the progress of the galvanic cell reaction?

<p>$V_{cell}$ decreases as the reaction proceeds towards equilibrium. (C)</p> Signup and view all the answers

What is the primary reason for the cell potential ($V_{cell}$) being zero at equilibrium in a galvanic cell?

<p>The cell can no longer do electrical work at equilibrium. (A)</p> Signup and view all the answers

How can the decrease in $V_{cell}$ be used in practical applications?

<p>All of the above. (D)</p> Signup and view all the answers

Which of the following statements best describes the qualitative relationship between the potential difference ($V_{cell}$) and the concentrations of reactants and products before equilibrium in a galvanic cell?

<p>$V_{cell}$ decreases as the concentrations of reactants decrease and the concentrations of products increase. (C)</p> Signup and view all the answers

What is the primary advantage of using galvanic cells as chemical sensors?

<p>They can measure the concentration of specific ions in a solution based on changes in $V_{cell}$. (C)</p> Signup and view all the answers

In industrial electrochemical processes, why is monitoring the potential difference ($V_{cell}$) important?

<p>To ensure optimal product yield by controlling the rate and extent of the reactions. (A)</p> Signup and view all the answers

What is the primary factor that determines the magnitude of the cell potential ($V_{cell}$) in a galvanic cell?

<p>The specific redox couples involved in the reaction. (C)</p> Signup and view all the answers

What is the value of the cell potential ($V_{cell}$) when a galvanic cell reaches equilibrium?

<p>$V_{cell}$ is equal to zero. (C)</p> Signup and view all the answers

Flashcards are hidden until you start studying

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser