Summary EDEXCEL ALEVEL CHEMISTRY NOTES: ACID BASE EQUILIBRIA

,
, 12-Acid-Base Equilibria


Brosted -


lowry
· Bronsted lowry acid is a proton donor

· Bronsted lowry base is a proton acceptor



Acid/Base Pairs

· every it acid will form a L base consusate basel
· every L base will form a L acid conjugate acid

e.s. NO laa) kOtraal kNOgrqa 20r1) +




8acid ↳C base conjugate conjugate
base acid


·
An alkaliis a base is
that soluble in water

· e.s. Calcium carbonate is) is a base, sodium hydroxide is an

alkaliand a base




pf
· determined by concentration of Hions in solution

o affected by 2 factors:

concentration oforiginal acid
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-
extent to which thatacid dissociates



strong/weak acids
o a strong acid is one that
is considered to be
fully
dissociated in Water -
equilibrium lies far to the right


o a weak acid is one thatonly dissociates to a small extent -
equilibrium

lies to the left



pH "power
=
of hydrogen
[H 1
+



=- 109


pl ofstrong acids


· if strong acids are fully dissociated in water, then we can calculate

CH"] directly from (acid

· a monoprotic acid will produce 1 mol of Holons per mole ofacid e.g. C

· a diprotic acid will produce 2 moles ofions per mole ofacid
C. S. H2504

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