Electrochem Flashcards
What is the oxidation number of group one on the periodic table?
+1
What is the oxidation number for group 2 on the periodic table?
+2
What is the oxidation number of hydrogen?
+1 with a nonmetal
-1 with a metal
What is the oxidation number of oxygen?
-2
What is the oxidation number of the halogen row? (F, Cl)
-1
What is the oxidation number of Ag?
1
What is the saying for oxidation and reduction?
L
E
O
says
G
E
R
What reactions are always redox?
Single replacement
What type of reaction is never redox?
Double replacement
What does it mean if an element is at the top of the activity series list?
It is more likely to kick something out below it, more spontaneous
What is a galvanic cell?
A way to connect oxidation and redox to allow electrons to flow and produce electricity
What is on the left of a galvanic cell?
Anode
What occurs in the left side of a galvanic cell?
Oxidation
What occurs in the anode?
Oxidation
What is the right part of a galvanic cell?
Cathode
What occurs in the right of a galvanic cell?
Reduction
What occurs in the cathode?
Reduction
Will the anode increase or decrease in mass?
Decrease
Will the cathode increase or decrease in mass?
Increase
How do you calculate E*Cell?
Red-Ox
What does a positive vs. negative E*Cell mean (in terms of spontaneity)?
Positive: spontaneous
Negative: nonspontaneous
What does a positive E*Cell mean (in terms of anode or cathode)
Cathode
What does a negative E*Cell mean (in terms of anode or cathode)
Anode
How do you calculate delta G?
Delta G = -nFE*Cell
