Paper 3mistakes To Remember Flashcards
PV = NRT units
In m3 so must multiply if asks for dm3
Must say MEAUSRE grsdient for straight line
Why is Ice bond angle bigger than water?
In ICE there is Hydrogen binding whereas in water there isn’t
- therefore there is EFFECTIVELY 4 bonding regions around Ice, but 2 bonding regions and 2 lone pairs around water
- lone pairs repel more than bonding regions, hence the water will have a greater bond angle than ice
So think of hydrogen bonds as a bond
Every chiral carbin =
2 isomers that’s it no combinatorics thing man
So if it said 4 isomers, we need another chrial carbo.
Cyclic ketone with random?
Ketone dispears and forms two bonds, to make water , draw it fully in case
What state does combustion make water
LIQUID , not gas
Finally making a new bond where does curly go
From lone pair BAKC TO BOND
Comparison between hydrogen bonds, and electronegative
Always state the trend straight away for one mark
Then don’t say HF had more hydrogen bonds say they have STRINGER hydrogen binds, therefore more energy needed
Man isomers = optical
2 x chiral 😪
How to explain disprortinstion
Say OXISIDES from +1 to etc
Reduced form etc to etc
Must say that
ORGANIC REAGENT REMEMBER
CA CL2 DOMT FORGET NOW
Remmebe MASS IN GRAMS FOR MO,ES
Amd if same mass same moles what to do?
Whatever do percnetage of mass x total mass to find mass and thus moles
