Module 2 Chapter 4 (part 2)
No description yet. This curated deck is ready for daily study.
Card preview (17)
What is an oxidation number
Is a set of rules that apply to atoms and can be thought of as the number of electrons in bonding to a different element
What is the rule form the oxidation number of an element
It has an oxidation number of 0
What does the oxidation number add up to
It adds up to the charge of the ion
What does each atom in a compound have
They have their own individual oxidation number
What is the oxidation number of group 1 metals
Always +1
What is the oxidation number of group 2 metals
Always +2
What is the oxidation number of oxygen usually
-2
What are the two exceptions for the oxidation number of oxygen
It’s -1 in peroxides and in F2O where it’s +2
What is the oxidation state of hydrogen
+1
What is the exception for the oxidation number of hydrogen
Unless it’s a metal hydride where it’s -1
What is the oxidation number of chlorine usually
it’s usually -1
What is the exception for chlorine’s oxidation number
Except in compounds with O and P
What do the roman numerals indicate
The magnitude of the oxidation number when an element may have a different oxidation number in different compounds.
What is reduction
A decrease in oxidation number
What is oxidation
An increase in oxidation number
What can you use to balance complicated oxidation and reduction half equations
KOHES
What does KOHES stand for
K - key element O - oxygen, balanced by adding H2O H - hydrogen balanced by adding H+ ions E - electrons balanced by adding e- to the more positive side S - states