Summary
Summary A level Chemistry OCR B topic sheets- Ozone story
- Module
- The ozone story
- Institution
- OCR
This is a summary sheet for OCR B chemistry A level ozone story - I achieved an A*
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OceansS
01 -11 : hydranon
what decdes whether an Ionic solid nul dissolve ? ·
hydranon
:
before thelons are dissolved
they must be separated from their lonic lattice (is endothermic) weller mole
are men hydrand in water (exothermic) . ↳ lattice enmapy polar bond
of dissociation !
lattice enmalpy
ions .
enthalpy change when 1 mol of solid is formed from
He
it's gaseous H
+
-
gs
Nail Clias--NaCICs
sin
e
g
.
+
because electrostanc
become more
negative when : - Interactions increase
ionic radi decreases
y chargedensin a
>
-
ionic increases
>
- charge
· when bonds
eniualpy Other insoluble . is rele
very negative lattice energy
=
for the
energy
enthalpy change of solution There are als
wo break ap
Coufference between enthalpy
changes of
hydraten e loutice enthalpy
hydranon enm
Fsolution H
&
Chydranon(total) Glattice enmaipy
formaneng
=
a
-
GaS
Nat
M A
↓
-
LatticeE hydration
enmalpy
solid
Usol-negative if is not wat
I
>
-
Cum dissolve
liquid
Lexomermic
Senmaipyer
solution enthalpy of solu
~ a)
strong + weak a
so-post(wontdessoke - Bransted-low mei
endomeric
acd proton donato
=
base proven accep
=
pH base :
calculating or
swong calculating
Dr
acd
or
=
strong
NaOH -Nat + OH-
-log (H ]
+
uwI t
PH
=
H( H
+
(-
+
(C] =
[C]
Buffers
pos
equrm
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