Oxidising And Reducing Agents

Question 1

Give 3 points about a reducing agent

Answer 1

Usually a metal or negative ion
Is itself oxidised ( donates electrons)
Reduces other species

Question 2

Why are alkali metals the best reducing agents?

Answer 2

Their low electronegativity makes them lose electrons easily

Question 3

Describe a reducing agent in industry

Answer 3

CO used to extract metals

Question 4

Give 3 points about oxidising agents

Answer 4

Usually non metal or positive ion
Causes oxidation to take place
Is itself reduced (gains electrons)

Question 5

Why are halogens the strongest oxidising agents

Answer 5

High electronegativity values mean electrons are hard to remove

Question 6

Describe where oxidising agents are used in industry

Answer 6

Hydrogen Peroxide - hair colour change

Permanganate - kills bacteria/ fungi in food

Question 7

What is a redox reaction?

Answer 7

A reaction in which oxidation and reduction both take place

Question 8

Give example of a common redox reaction

B) explain this term

Answer 8

Displacement reaction

B) the metal higher in the ECS displace the ions from the other metal

Question 9

In more complex redox reactions what side would the electrons be added to?

Answer 9

The side with the greater charge