Redox Reactions Flashcards
What is a redox reaction?
A reaction where oxidation and reduction happen at the same time.
What does OILRIG stand for?
Oxidation is Loss, Reduction is Gain.
If an oxidation number increases, what has happened?
Oxidation has taken place.
If an oxidation number decreases, what has happened?
Reduction has taken place.
When an element is uncombined, what is it’s oxidation number?
0.
What is an oxidising agent?
A compound that causes other compounds to oxidise.
What is a reduction agent?
A compound that causes other compounds to be reduced.
What does an Oxidising agent undergo?
Reduction.
What does a reducing agent undergo?
Oxidation.
What is an oxidation number?
A measure of the number of electrons that an atom uses to bond with another element,
When H is combined with another element, what is it’s oxidation number?
+1
When O is combined with another element, what is it’s oxidation number?
-2
What is the exception to combined H’s oxidation number?
If H is combined to a metal hydride, the oxidation number is -1.
What are the exceptions to combined O’s oxidation number?
If O is combined to peroxide, it will be -1. If bonded to F, it will be +2.
What must the sum of the oxidation number always equal?
The charge of the atom or ion.
