Electrochemical series Flashcards
In an electrochemical series, what are the equations always written as?
Reduction equations
How do you predict the direction of reactions?
1) find the two half-equations for the redox reactions and write them both as reduction reactions
2) Use the electrochemical series to work out which one has the most negative electrode potential
3) Write this one out as the reverse reaction as this is the oxidation form
4) Combine the two half-equations and write out a full redox equation
How do you calculate cell potential?
The standard electrode potential of the half cell being reduced - the standard electrode potential of the half cell being oxidised
What is an electrochemical series?
List of electrode potentials for different half cells with the most negative at the top to the most positive
In an electrochemical series, what is the most negative half cell?
The reducing agent
In an electrochemical series, what is the most positive half cells?
The oxidation agent
What is the weakest reducing agent?
The most positive electrode potential value
Why is the most positive electrode potential value the weakest reducing agent?
best at gaining electrons
Why is the most negative electrode potential value the strongest reducing agent?
best at losing electrons
