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Chapter 11.1 &11.2:Preparation of salts (Salt (Ionic compound, Formed…
Chapter 11.1 &11.2:Preparation of salts
Salt
Ionic
compound
Formed by
replacement
of 1 or more
hydrogen ions
of an acid by a
metallic
or
ammonium
ion
Positive metal
or
ammonium
ion,
negative no-metal
ion (formula)
Hydrated
salts (contain
water
of crystallisation)
Anhydrous
salt (
DO NOT
contain water of crystallisation)
Soluble
salt
Reactions of acid with
metal
Salt obtained will be
contaminated
with acid
:+1::skin-tone-4: Suitable for
moderately
reactive metal
:red_cross:
NOT
suitable for
very
reactive metal (sodium, potassium)
:!:
Excess metal
is used, so that
ALL
acid is used up
#
:red_cross:
NOT
suitable for
unreactive
metal (lead)
Reaction of acid with
oxide
Copper
DO NOT
react with acid
BUT
copper (II) oxide react with acid:!:
Reaction of acid with
carbonate
Titration
Soluble
reactant,
soluble
product
ONLY
suitable for
Sodium, Potassium, Ammonium salt
:!:
Insoluble
salt
Precipitation (
Exchanging partners
)
1 solution
MUST
contain
positive ion
, the other
MUST
contain
negative ion
Soluble
reactant,
insoluble
product and
aqueous
product
Factors
Solubility of
reactant
Solubility of
salt
(solubility table)