18 Questions
What is the electrode potential for the disproportionation reaction involving Cu2+ ions?
+0.37V
Which type of electrochemical cell is commonly used as a source of energy for commercial use?
Fuel cells
What is the main waste product produced in a hydrogen fuel cell?
Water
Why are fuel cells considered advantageous for generating electrical current?
They generate electricity without needing to be recharged
What is one of the downsides of hydrogen fuel cells?
High flammability of hydrogen
Based on the provided electrode potentials, is the disproportionation reaction thermodynamically feasible?
Yes, it is thermodynamically feasible
What aspect of a reaction does the cell emf value indicate?
Thermodynamic feasibility
Why might a reaction not actually occur even if it is thermodynamically feasible?
Slow rate of reaction
What series can standard electrode potentials be ordered into?
Electrochemical series
Which type of electrode potentials are better oxidising agents?
Highly positive
In a disproportionation reaction, what happens to the oxidation number of a species?
It both increases and decreases
How can electrode potentials help determine if a species will undergo disproportionation?
By checking if the overall Eөcell value is positive
How does increasing the concentration of the solutions in an electrochemical cell affect the cell emf?
It makes the cell emf more positive.
Which of the following is the most correct statement about the relationship between cell emf and entropy change?
Cell emf is directly proportional to the total entropy change of the reaction.
Which of the following electrochemical cells could be used to study disproportionation reactions?
A cell with the same element in different oxidation states.
What is the effect of increasing the pressure on the cell emf?
It makes the cell emf more negative.
What is a major limitation in using the standard hydrogen electrode (SHE) to determine the feasibility of a reaction?
The SHE cannot be used to accurately measure the standard cell potential of the reaction.
Which type of electrochemical cell is most commonly used in commercial applications?
Fuel cells that use a metal and a gas electrode.
This quiz covers cell reactions in electrochemistry, specifically focusing on the disproportionation of Cu+ ions. It also explores the practical applications of electrochemical cells in commercial settings, including non-rechargeable, rechargeable, and fuel cells.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
