Inogamic Exam Defintioms And Answers! Flashcards
What is a Ligand
Molecule ion donate a pair of electrons to a central metal ION
(Must say ion)
What can form optical and stereoisomers ligands
Only octahedral form stereoisomers
Only sqaure planar and octahedral cos trans
What else other than cr 6+ can give orange colour (similar )
Cr2o72-
Don’t lack and say cr 3+ WHEN ITS NOT EVEN THERE
(Can say fe 2+ for fecl2 bevause they acc broken up in ion form. However for cr2072- it’s already broken up)
Explain the role of Haemoglobin with oxygen around oxygen (2)
And why CO is toxic (1)
Using ligand sub ideas
- Haemoglobin contain Fe2+ group, which oxygen BINDS with in dative covalent bonds
- ligand sub resctions take place, with Co2 ligands replacing the o2, and vice Verca when needed
- however CO forms much STRONGER bonds with FE2+, AND these are IRREVRSIBLE (thus less harmoglobin active and thus toxic)
How to say why the boiling point because of electrons increases easy way
What word they prefer
Lit just say has more electrons, and therefore stringer and MORE London forces (don’t need more than this) and therefore more energy needed to overcome, so stringer
THEY PREFER MORE
How to say why polar / hydrogen bonds makes higher boiling point
Just says a forms hydrogen bonds whereas b doesn’t, so more energy needed to overcome, so higher boiling
Don’t long things out
DISPROPORTIONATION FULL DEFINITION DONT LACK
Its same ELEMENT gets oxidised and reduced, NOT SPECIES, be careful !
Heterogenous equilibrium
Is when SPECIES are different states don’t say reavtntss and products
W tho apt change of hydration
1 mol of gasohes ions dissolve in WATER to form one mole of aqueous ions
How to say exactly why hydration changes?
2 points
Must say effect (size shielding)
And that this INCREASES OR DECREASES attraction to the water molecules, must mention
Average bond enthalpy (2 marks) defintion
Enthalpy required to break ONE MOLE of covalent bonds
In GASEOUS MOLECULES
How to do explain why kp changes for pressure 3 markers
1) equilborum shift
2) say what happens when pressure increases ( denominator increases more than numerator)
3) so say which side increases more to restore the KP back to what it was! ( must say restore)
How to do percentage disposition
Conc h+ / conc of weak acid
How to represent a non metal half cell like iodine?
ANYTHING NON METAL becomes a platinum strip!!! So I2 and I- in solution
How to show electrode potentials in terms of equilbora !
Say more negative, hence higher tendency to oxidise, and thus system will shift to the LEFT / right
Say these three things and you’re good,
