Module 3 Lecture 2 Flashcards
Are redox equations equillibrium?
No, they do not go in the reverse direction
What must exist if there is an electron transfer?
A potential difference
What are the units of potential difference?
V or JC-1 = energy per unit charge
What does the potential difference depend on?
How big the difference is between the low potential difference and the high potential difference
What does the electrons travel on between the two solutions?
A wire
What occurs at the cathode?
Reduction
What occurs at the anode?
Oxidation
What is the salt bridge used for?
Adds anions and cations to compensate for the change in charge in the solution caused by the electron transfer
What represents the salt bridge in a cell diagram?
ll
What seperates different states in a cell diagram?
l
What is always on the outside of a cell diagram?
The species that is attached to the wire
What is standard concentration?
1molL-1
If the potentiometer shows a positive value where are the electrons going and what is occurring there?
The electrons are going to the right and reduction is occurring
If the poteniometer shows a negative value where are electrons going and what is occurring there?
The electrons are going to the left and reduction is occurring there
What does the E^o cell measure?
The difference between how much each side wants to gain electrons
