Variable oxidation states

Question 1

What 2 factors affect size of redox potential?

Answer 1

1) ligands

2) pH

Question 2

How does the type of ligand affect the size of redox potential?

Answer 2

Different ligands may affect the size of the redox potential depending on how well the ligands bind to the metal ion in a particular oxidation state.

Question 3

How does pH affect size of redox potential?

Answer 3

Redox potentials are usually larger in lower pH ( more acidic solutions).

• A larger redox potential, means that the ion is more easy to reduce.

Question 4

What is the symbol for tollens reagent?

Answer 4

[Ag(NH3)2]+

Question 5

General equation for reaction of aldehyde with tollens reagent:

Answer 5

RCHO+2[Ag(NH3)2]+ +3OH- -> RCOO- +2Ag +4NH3 + 2H2o