Everything Else Unit 5 Flashcards
What is the shape of a molecule with 6 Ligands?
Octahedral
2 of them are in, 2 flat 2 out.
Properties of transition metal compounds
Coloured ions and compounds
Catalytic properties
Forms complex ions
Why is heterogeneous better than homo
They can be filtered off
Easy to seperate
What is the charge of amino acids in solid form?
+ and -
What happens when you turn nitrobenzene to phenylamine
Reduction
How do you seperate oil and water ?
Add organic solvent and water oil mixture to separating funnel and separate
Distill
Add CaCl2 / NaSO4 to dry it.
Filter
Why do Ligands have colour ?
Ligands cause d orbitals to split
Same frequency of light is absorbed for that colour
Promotes electron transitions from low to high energy
What can a polyamide form from?
Diamine with di-carboxylic acid or di- acid chloride
Peptide link and OH-
The C=O will get a O-
What type of reaction is hydrogenation
Free radical addition
What are the fidel crafts reactions
Electrophilic substition
How to show a reaction is redox ?
State the oxidation numbers of the appropriate elements
Why do you use a little solvent with recrystallisation
To increase the yield as little remains in solution.
Transition elements
Form stable ions with an incomplete d-subshell
Steam distillation to normal distillation
Steam is passed through mixture
The compound volatile in steam will be carried away by steam
This uses lower temperature and prevents decomposition
How does hydrogen, iron and manganate ions react with each other?
MnO4- + 8H+. + 5Fe 2+. > Mn 2+ 5Fe3+ and 4 water
Why is electrophilic substition favoured by benzene?
It maintains the delocalised system , that provides the stability of benzene , of the 6 p orbital electrons.
How does bromine react with phenol?
3Br2 reacts with it to give 3HBr
What happens when a peptide link if refluxed with acid?
Reacts with water and H+ to give amino acid and something with a NH3+
Why do transition metals form good catalysts?
They have various oxidation states
They are able to donate and receive electrons
What does moving equilibrium to the left mean for cell potential?
It goes down
Why don’t copper +1 complexes have colour?
They have a full d she’ll
