Redox equations Flashcards
(26 cards)
What is oxidation?
Oxidation is the loss of electrons.
What is reduction?
Reduction is the gain of electrons.
What does OIL RIG stand for?
OIL RIG stands for Oxidation Is Loss (of electrons) and Reduction Is Gain (of electrons).
What is an oxidising agent?
An oxidising agent accepts electrons and undergoes reduction itself.
What is a reducing agent?
A reducing agent donates electrons and undergoes oxidation itself.
What is a spectator ion?
A spectator ion is any species whose oxidation number remains constant throughout the reaction.
What do oxidation numbers indicate?
Oxidation numbers tell you about the movement of electrons.
What is the oxidation number of uncombined elements?
All uncombined elements have an oxidation number of 0.
What is the oxidation number of a simple monoatomic atom?
The oxidation number of a simple, monoatomic atom is the same as its charge.
What is the sum of oxidation numbers in molecular ions?
For molecular ions, the sum of the oxidation numbers is the same as the overall charge of the ion.
What is the overall charge of a neutral compound?
For a neutral compound, the overall charge is 0, and the sum of oxidation numbers is also 0.
What is the oxidation number of molecular hydrogen?
0
What is the oxidation number of hydrogen in a compound normally?
+1
What is the oxidation number of hydrogen in metal hydrides?
-1
What is the oxidation number of oxygen in peroxides?
-1
What is the oxidation number of molecular oxygen?
0
What is the oxidation number of oxygen in a compound normally?
-2
What is the oxidation number of flourine?
-1
What do ionic half equations illustrate?
Ionic half equations illustrate the electrons lost or gained during redox reactions.
What is the 1st step to write a redox equation?
- Write the half equation for the oxidation part of the reaction.
What is the 2nd step to write a redox equation?
Write the half equation for the reduction part of the reaction.
What is the 3rd step to write a redox equation?
Make the equations contain an equal number of electrons.
What is the 4th step to write a redox equation?
Combine half equations into a full redox equation.
What is the 5th step to write a redox equation?
Cancel equal electrons on both sides.
