Transition metal titrations Flashcards
1
Q
What are the steps to balance a half equation?
A
1) Add water
2) Add H+ ions
3) Add e- to balance the charge
2
Q
What is the equation of the titration of Fe²⁺ with MnO₄⁻?
A
MnO₄⁻ + 8H+ + 5Fe²⁺ -> Mn²⁺ + 4H₂O + 5Fe³⁺
3
Q
What is the equation for the titration of MnO₄⁻ and C₂O₄²⁻?
A
2MnO₄⁻ + 16H+ + 5C₂O₄²⁻ -? 2Mn²⁺ + 8H₂O + 10CO₂
4
Q
What is the colour of the solution at the end point when Fe²⁺ and C₂O₄²⁻ are titrated with MnO₄⁻?
A
Purple
5
Q
Why are transition metals useful in titrations?
A
They have variable oxidation states
They change colours
6
Q
What are two examples of reducing agents used transition metals titrations?
A
Fe²⁺
C₂O₄²⁻
7
Q
What is an oxidising agent used in a transition metals titrations?
A
Aqueous potassium manganate (VIII)
