1d. Oxidising and Reducing Agents Flashcards
What is meant by reduction?
The gain of electrons by a reactant
What is meant by oxidation?
LO 31
Loss of electrons by a reactant
What is a redox reaction?
LO 32
A reaction where oxidation and reduction happen at the same time
What is an oxidising agent?
- substance which gains electrons
- substance which is reduced
- element with a high electronegativity
- substance which becomes more positive
Which group are thew strongest oxidising agents?
Name 3 common molecules or group ions that act as strong oxising agents
Hydrogen peroxide
Acidified Dichromate
Acidified Permanganate
Why do some oxidising agents like dichromate and permanaganate have to be acidified?
As a source of H+ (aq) ions
What are some common uses of oxidising agents?
Kill funghi and bacteria
Inactivate viruses
Breaking down colours (bleaching hair and clothes)
What is a reducing agent?
- substance which loses electrons
- substance which is oxidised
- element with a low electronegativity
- substance which becomes less positive
Which group are the strongest reducing agents?
Group 1
Name one common molecule that acts as a reducing agent
Carbon monoxide
Where are oxiding and reducing agents found in data booklet
