Transition metals Flashcards
What type of bond is formed between water and copper in a TMI?
Co-ordinate bond
How many water molecules surround copper in its TMI?
What is the name of the shape formed?
6
Octahedral
What is a ligand?
A lone pair e- donor
Name [Cu(H2O)6]2+
Hexaaquacopper II
What is the relationship between charge density and acidity?
As charge density increases, acidity increases (pH decreases)
Why does HCD increase acidity?
As charge density increases, FoA between cations and oxygen in water increases
Weakens O-H bond
H+ can be donated more easily
What type of reaction is the acidification of a hexaaqua ion?
Hydrolysis
What is the equation of the hydolysis of hexaaqua copper II?
[Cu(H2O)6]2+ + H2O → [Cu(H2O)5(OH)]+ + H2O
Which direction does equilibrium shift if you add an acid to a hexaaqua ion?
Left
Which direction does equilibrium shift if you add a base to a hexaaqua ion?
Right
Why can bases such as ammonia and carbonate remove more protons than water?
How many protons can these bases remove?
They are stronger bases
Removes protons until charge is neutral and ppt forms
Whichbase can remove all protons from a hexaaqua ion even after a ppt forms?
OH-
What is a transition metal?
D-block element forming 1 or more stable ions with a partially filled D-shell
Do transition metals have a higher or lower bpt than S-block metals?
Higher
Name a linear transition metal ion?
Tollen’s reagent
[Ag(NH3)2]+
Name a square planar TMI
(cis/trans) platin
[Pt(Cl)(NH3)]
Name a tetrahedral TMI
[Cu(Cl)4]2-
What is cis-platin used for and why is it more effective than transplatin?
Cancer drug
Stereospecificity means it is easier for Cl- to bind to DNA
What is the structure of cisplatin?
What is the structure of transplatin?
What is the structure of EDTA
What is the charge ofo EDTA?
4-
What is the equation for the reaction of [Cu(H2O)6]2+ with EDTA
[Cu(H2O)6]2+ + EDTA4- → [Cu(EDTA)]2- + 6H2O