1d. Oxidising and Reducing Agents Flashcards Preview

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Flashcards in 1d. Oxidising and Reducing Agents Deck (12)
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1

What is meant by reduction?

The gain of electrons by a reactant

2

What is meant by oxidation?

 

LO  31

Loss of electrons by a reactant

3

What is a redox reaction?

 

LO 32

A reaction where oxidation and reduction happen at the same time

4

What is an oxidising agent?

  • substance which gains electrons
  • substance which is reduced
  • element with a high electronegativity
  • substance which becomes more positive

5

Which group are thew strongest oxidising agents?

6

Name 3 common molecules or group ions that act as strong oxising agents

Hydrogen peroxide   

 

Acidified Dichromate

 

Acidified Permanganate

7

Why do some oxidising agents like dichromate and permanaganate have to be acidified?

As a source of H(aq)  ions

8

What are some common uses of oxidising agents?

Kill funghi and bacteria

Inactivate viruses

Breaking down colours (bleaching hair and clothes)

9

What is a reducing agent?

  • substance which loses electrons
  • substance which is oxidised
  • element with a low electronegativity
  • substance which becomes less positive

10

Which group are the strongest reducing agents?

Group 1

11

Name one common molecule that acts as a reducing agent

Carbon monoxide

12

Where are oxiding and reducing agents found in data booklet