Redox Equations

Question 1

What is oxidation

Answer 1

The loss of electrons, gain of oxygen and the loss of hydrogen

Question 2

What is reduction

Answer 2

The gain of electrons, loss of oxygen and the gain of hydrogen

Question 3

If reduction and oxidation happen simultaneously it is what type of reaction?

Answer 3

A redox reaction

Question 4

What is an oxidising agent

Answer 4

An electron acceptor

Question 5

Electron donator

Answer 5

Reducing agent

Question 6

What is the oxidation state of an element

Answer 6

The total number of electrons it has donated or accepted

Question 7

An oxidation state of 0

Answer 7

• Uncombined elements
• Elements just bonded to identical atom O2, H2
• Compounds with no charge

Question 8

What is the oxidation state of a monoatomic ion

Answer 8

It is the same as it’s charge

Question 9

Oxidation state of -2

Answer 9

Combined oxygen except in peroxides where it’s -1

Question 10

Oxidation state of +1

Answer 10

Combined hydrogen except in metal hydrides where it is -1

Question 11

Roman numerals in a chemical name show what?

Answer 11

It’s an oxidation number

Question 12

Oxygen is right and reduction is left

Answer 12

❤️

Question 13

How can we make full equation from ionic half equations

Answer 13

By combining them

Question 14

The higher the oxidation number of the element…

Answer 14

The more powerful an oxidising agent it will be

Question 15

The lower the oxidation number of an element….

Answer 15

The more powerful a reducing agent it will be

Question 16

When a substance is simultaneously oxidised and reduced, giving two different products

Answer 16

Disproportionation

Question 17

State where reduction and oxidation take place

Answer 17

• Cathode: Reduction because cathode has positive charged e.g Ca2+ so ions gain electrons
• Anode: Oxidation because anode has negative charged e.g 2Cl- so ions loose electrons