Redox

Question 1

What are reducing agents?

Answer 1

They lose electrons- they are oxidised

Question 2

What are oxidising agents?

Answer 2

They gain electrons and are reduced

Question 3

When is hydrogens oxidation number not always +1?

Answer 3

In hydrides where it is -1
Example: NaH

Question 4

When is chlorines oxidation state not always -1?

Answer 4

In a compound with F and O- it has a positive alum
E.g. it has a value of +3 in ClF3

Question 5

What is oxygens oxidation stats in peroxides?

Answer 5

-1 in peroxides

Question 6

What is oxygens oxidation number in OF2?

Answer 6

+2

Question 7

Reduction (oxidation number)?

Answer 7

Decrease

Question 8

Oxidation (oxidation number)?

Answer 8

Increase

Question 9

Reducing agent (oxidation numbers)?

Answer 9

The one being oxidised- increase in oxidation numbers

Question 10

Oxidising agent (oxidation numbers)?

Answer 10

The one being reduced- decrease in oxidation number

Question 11

What happens when metals react with acids?

Answer 11

They are oxidised and form salt and hydrogen gas