Trans Metal

Question 1

If start with fe3+ does it react with(help catalyst) I- or s208 2- first?

Answer 1

I- as fe3+ gets reduced to fe2+ so it’s an oxidising agent and I- gets oxidised to I2
Pg30 homogenous catalyst

Question 2

Why when you add aq naoh to cu you get ppt then in excess it dissolve (reactants may be wrong ion rmb)

Answer 2

Cause at first the water from aqueous reacts then naoh reacts then lcp shift left for 1st eqn

Question 3

Is homogenous and heterogenous metal or ions catalyst

Answer 3

Homogenous is ions hetero is metal

Question 4

Why is so2 poison to Fisher tropsch catalysts

Answer 4

So2 absorbs onto cobalt surface but form permanent bonds active sites blocked from h2 and o2 molecules

Question 5

Why are transition elements able to form complex ions

Answer 5

1.Transition metal ions have High charge density and can attract ligands with at least 1 lonepair, polarising power produces covalent bonds with ligands
2. The have energetically accessible and vacant d orbitals to accommodate lp from ligands via dative bonds

Question 6

Why does d orbitals split

Answer 6

X2y2 and z2 orbitals have more repulsion, so they have to promote to higher energy level to overcome repulsion