12. Redox Reactions

Question 1

What are reduction-oxidation reactions?

Answer 1

Redox reactions are reactions that involve the electron transfer from the reducing agent to the oxidising agent

Question 2

What is another word for oxidising agent?

Answer 2

oxidant

Question 3

What is another word for reducing agent?

Answer 3

reductant

Question 4

Do oxidising agents oxidise or reduce?

Answer 4

confusing right? oxidising agents and oxidants reduce, which means they gain electrons.

Remember OILRIG (oxidation is loss and reduction is gain)

Question 5

Do reducing agents oxidise or reduce?

Answer 5

confusing again! reducing agents oxidise things, which means they lose electrons

OIL RIG

Question 6

When something gets oxidised, what is happening? Explain in detail.

Answer 6

when something is oxidised, a oxidizing agent oxidizes it

Something that oxidizes is a reducing agent

Question 7

Which happens first in a redox reaction, the reduction or the oxidation?

Answer 7

LOL, wrong. Or maybe you got it right. They happen at the same time.

Question 8

Give an example of a reduction half equation

Answer 8

reduction is.. gain? and remember its LHS

so a (cation) + electrons -> b (neutral)

Fe²+ plus 2e¯ = Fe (neutral)

Question 9

Give an example of a oxidation half equation

Answer 9

oxidation is.. loss? and remember its LHS

so b (neutral) -> a (cation) + electrons

Question 10

define a half reaction

Answer 10

half reactions are balanced chemical equations that show the loss or gain of electrons in a redox reaction

they split the redox reaction into its reduction and oxidation reactions, then add them up like simultaneous equations in enthalpy, for example.

Question 11

DAILY REMINDER TO WRITE ?

Answer 11

ur states bitch

Question 12

steps to balance half equations (go over this intently)

Answer 12

o Balance the elements other than H and O
o Balance O by adding H2O
o Balance H by adding H+
o Compare the charges and add a number of e- to the relevant side to balance