Identification Of Oxidation And Flashcards
What is oxidation?
Oxidation is the process in which an atom, ion, or molecule loses electrons.
What is reduction?
Reduction is the process in which an atom, ion, or molecule gains electrons.
True or False: In a redox reaction, oxidation and reduction occur simultaneously.
True
What is the mnemonic used to remember oxidation and reduction?
‘OIL RIG’ which stands for ‘Oxidation Is Loss, Reduction Is Gain.’
In terms of oxidation states, what happens to the oxidation state of an element during oxidation?
The oxidation state increases.
In terms of oxidation states, what happens to the oxidation state of an element during reduction?
The oxidation state decreases.
Fill in the blank: A substance that donates electrons is called a __________.
reducing agent
Fill in the blank: A substance that accepts electrons is called an __________.
oxidizing agent
What is a common example of an oxidation reaction?
Rusting of iron.
What is a common example of a reduction reaction?
The conversion of iron(III) oxide to iron.
True or False: Oxidation can occur without reduction.
False
What is the role of oxygen in oxidation reactions?
Oxygen often acts as an oxidizing agent.
What is the oxidation state of carbon in carbon dioxide (CO2)?
+4
What is the oxidation state of sulfur in sulfuric acid (H2SO4)?
+6
True or False: All redox reactions involve oxygen.
False
What happens to the electrons during a redox reaction?
Electrons are transferred from one species to another.
Which of the following is a characteristic of a reduction reaction? a) Loss of electrons b) Gain of electrons
b) Gain of electrons
In electrochemistry, what is the anode?
The electrode where oxidation occurs.
In electrochemistry, what is the cathode?
The electrode where reduction occurs.
What is a half-reaction?
A reaction that shows either the oxidation or reduction process separately.
Fill in the blank: In a redox reaction, the species being oxidized is ________.
losing electrons
Fill in the blank: In a redox reaction, the species being reduced is ________.
gaining electrons
What is the change in oxidation state for the reducing agent during a redox reaction?
The oxidation state decreases.
What is the change in oxidation state for the oxidizing agent during a redox reaction?
The oxidation state increases.
