chem paper 2
what does naoh wffect
only cooh
cooh + naoh
coo-na+. +h20
cooh + mg
(coo-)2mg +h2
cn-cooh
h+
what does it mesn if it has a higher electron density
it can attract cl2 more easily
pi bond
sidewwys overlap of p orbitals
sigma bond
hesd on overlwp of p orbitals
similarities with kekule and delocalised model
both involve the overlappimf of p orbitwls
differences
1) kekule consiste of slternwtimg pi bomds whereas the deloclaised model has the pi bonds delocalised wcross the whole ring
predictions from the delosalised model
1) it does not discoloursie bromine water
2) the dehyrogenwtioj of cyclohexene is -120kjmol so we would expect the dehdrogenetwtiom of benzene ro be -360 but ir is actyally less exothermic thsn oredicted
what do we compwrnth melting poimts of our compounde to in order to idemtify them
a known database
aldedhyde- nitrile
H+ /KCN
what is the normal comonds used in spectroetry
si(ch3)4
when talking about major products what do you say
major product formed from more stable cwrbocwtion
what happnes if yiu add h+ to nh2
nh3+
how to workout mr of x amount of a polyester
work it out then add the remaining mr for what is not included in the polyester
does reaction of aldehyde to carboxylic acid make water
no
what will naco3 react with
only carobylic acid
what will naoh react eith
both phenol and csrbocylic acid
limitwtion of the initiwtiqn progqtiom mechanism
- further wubsitution mwy occur
- subisituion ,ay occur on any cwrbin atom in the cwrbon chwin
what can d2o be used for
to idemtify oh or nh protons
if we have a NH2 and we acc a hydorixide what must we write
either nh2 or nh3 plus
what is homolytic fission
bresking of covalent bond in which each atom recovd 1 electron from the bonding pair
pi vs sigma bind enthalpy
pi has a weaker
how many [O] do you use when going from alchol to ketome
1
what does naco3 reacts with and what does naoh rewct with
what does naoh reacts with
cwrboxylic acids amd phemols
not alchols
what does naco3 react with
only carboylic acids
what is a sogma bond
overlap of obitals between bonding atoms
what is a oi bond
sideways overlap of adjecent orbiatls
what is opticsl isomerism
super non imposbsle mirror images around a chiral carbon
how do you go from ester to carboxylic acid
H+/H20