Redox

Question 1

What is redox?

Answer 1

the transfer of electrons

Question 2

What is the different types of iron which undergo redox?

Answer 2

Fe2+ = Ferrous iron (reduction)
Fe3+ = Ferric iron (oxidation)

Question 3

What can be used to remember redox?

Answer 3

OILRIG

Question 4

What is OILRIG?

Answer 4

Oxidation Is Loss
Reduction Is Gain
(of electrons)

Question 5

What do half reactions help with?

Answer 5

balance redox equations and see where the e- are transferred

Question 6

What is the general redox rule with pure phases?

Answer 6

Oxidation state of pure phases = zero

Question 7

What will oxygen of mono-ion equal?

Answer 7

the charge

Question 8

What is the general redox rule for oxygen in a molecule?

Answer 8

-2 (except pure phase O2(g) and F)

Question 9

What is the general redox rule for hydrogen in a molecule?

Answer 9

+1 (except pure phase H2(g))

Question 10

What is the general redox rule for charge of ionic compounds?

Answer 10

sum of oxidation states
SO4^2- (S^6+ , 4 x O^2- = -8 residual = -2)