Redox Flashcards
What is meant by the term oxidation number?
The number of electrons involved in bonding to a different element.
What is the oxidation number of elements?
0
What is the oxidation number of O2?
0
Where does the sign go in an oxidation number?
Before the number
What is the oxidation number of O when combined in a compound?
-2
What is the oxidation number of H when combined in a compound?
+1
What is the oxidation number of F when combined in a compound?
-1
What is the oxidation number of Group 1 ions?
+1
What is the oxidation number of Group 2 ions?
+2
What is the oxidation number for halogens?
-1
What is the oxidation number for H in hydrides?
-1
What is the oxidation number for O in peroxides?
-1
What is the oxidation number of O when bonded to F?
+2
What is the sum of oxidation numbers equal to?
The total charge
What do redox reactions involve?
Oxidation and reduction
What is reduction?
This is the gain of electrons.
What is oxidation?
The loss of electrons.
What happens to the oxidation number in reduction?
It decreases.
What happens to the oxidation number in oxidation?
It increases.
What is produced in a redox reaction of metals and acids?
A salt and hydrogen
What is reduced in the redox reaction of metals and acids?
Hydrogen
What is oxidised in the redox reaction of metals and acids?
The metal
