Flashcards in Acids And Redox Deck (17)
What is the oxidation number?
Based on a set of rules that apply to atoms and can be thought of as the number of electrons involved in bonding to a different element.
What are the oxidation rules for elements?
The oxidation number is always 0 for elements or compounds with a single element
What are the oxidation rules for compounds and ions?
Each atom in a compound has an oxidation number
An oxidation number has a sign, which is placed before the number.
Oxidation number for O?
The oxidation number of H
Oxidation number of F
Oxidation number of Na+, K+
Oxidation number of Mg2+, Ca2+
Oxidation number of Cl-, Br-, I-
Oxidation number of H in metal hydrides
Oxidation number of O in peroxides
Oxidation number in O bonded to F
How to work out oxidation numbers
Sum of oxidation numbers=total charge
Account for all elements and superscript numbers
Using Roman numerals in naming
Traditional and modern
Roman numerals are the modern names and shows oxidation number
Traditional names use -ate and -ite
-ite is 1 less than -ate
What does reduction mean?
Removal of oxygen
Gain in electrons
Decrease in oxidation number
What does oxidation mean?
Addition of oxygen
Loss of electrons
Increase in oxidation number