18 Questions
What is the primary function of a potentiostat in an electrochemical reaction?
To regulate the energy of the electrons in the electrode
What is the y-axis typically labeled as in a cyclic voltammetry graph?
Resulting current (i)
What is the difference between a chemical reduction and an electrochemical reduction?
The presence of an electrode
What is the purpose of imposing a cyclic voltammetry on an electrochemical system?
To control the electrode potential
What is the significance of the sign convention used in reporting CV data?
It affects the interpretation of the resulting current
What is the difference between homogeneous and heterogeneous reduction of ferrocenium?
The phase of the reactants
What determines the amount of Ox available for reduction in the CrEr mechanism?
The equilibrium constant of the first step
What can be extracted from voltammograms in certain cases?
The equilibrium constant
What is the result of a large equilibrium constant in the CrEr mechanism?
A completely reversible voltammogram
What is the focus of quantitative electrochemical analysis?
Exploring the electron transfer reactions underlying renewable energy technologies
What is the significance of the voltammogram in the CrEr mechanism?
It reflects the reversibility of the reaction, which is influenced by the equilibrium constant
What is the benefit of utilizing electrochemistry in research?
It is a powerful tool for exploring the electron transfer reactions underlying renewable energy technologies
What is the purpose of a reference electrode in an electrochemical cell?
To maintain a constant potential independent of the electrolyte used
What is the advantage of using an AgCl/Ag electrode as a reference electrode?
It eliminates the possibility of silver salts leaks
What is the purpose of the porous frit in an electrochemical cell?
To separate the reference electrode from the solution
Why is it important to match the solvent and electrolyte in the reference compartment to the one used in the experiment?
To minimize junction potentials
What occurs when a potential is applied to the working electrode such that reduction or oxidation of the analyte can occur?
The current flow between the working electrode and the counter electrode increases
What is the purpose of the counter electrode in an electrochemical cell?
To complete the electrical circuit
Test your understanding of electrochemistry, a crucial tool for studying reactions involving electron transfers. This quiz covers the fundamentals of electrochemistry, including oxidation and reduction of metal complexes, and the differences between chemical and electrochemical reduction.
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