lecture 8

Question 1

How do you select a titrant species?

Answer 1

you titrate with a strong oxidant , usually iodine

Question 2

What do we look for in redox titrations?

Answer 2

we need a reaction that goes to completion after each titrant volume added step

Question 3

How do you predict the titration curve?

Answer 3

1. identify the titration reaction and the indicator half-reactions
2. recognize that the initial potential can be measured
3. to predict the rest, use before at and after equivalence point

Question 4

How to calculate E

Answer 4

E(v) = Eº - (0.05916)/1 log [Fe2+/Fe3+]

Question 5

How do you calculate E of redox reaction before the equivalence point?

Answer 5

E(V)= Eº - (0.05916)/1 log [Fe2+/Fe3+] - standard

Question 6

How do you caluclate E of redox reaction at half equivalence point?

Answer 6

E = [Eº analyte ] - E ref

Question 7

How do you calculate E of redox reaction at equivalence point?

Answer 7

E(V) = Eºof products + Eº of reactants / 2 - standard

Question 8

How do you calculate E of redox reaction after equivalence point?

Answer 8

E(V)= Eº - (0.05916)/1 log [products] - standard

Question 9

How do you caluclate E of redox reaction at twice the equivalence point?

Answer 9

E = Eº titrant - E ref