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Chemistry Unit 2- WJEC
Acids, Bases and Salts
Making salts
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Cards (26)
What is a salt?
A compound formed by the
neutralisation
of an
acid
by a
base
What is an example of a salt?
Sodium chloride
What is the first name of a salt?
Metal
What is the second name of a salt?
Acid
What is nitric acid written as?
Nitrate
What is the ion for nitric acid?
NO3-
What is hydrochloric acid written as?
Chloride
What is the ion for hydrochloric acid?
Cl-
What is sulfuric acid written as?
Sulfate
What is the ion for sulfuric acid?
SO4 2-
What is the reaction of acids and reactive metals?
Acid
+
metal
>
salt
+
hydrogen
What is the reaction with acids and metal hydroxides?
Acid
+
metal hydroxide
>
salt
+
water
What is the reaction with acids and bases?
Acid
+
base
>
salt
+
water
What is the reaction with acids and metal carbonates?
Acid
+
metal
carbonates > salt+water+
carbon dioxide
How are insoluble salts made?
By reacting
two salts
together in a
precipitate
reaction
What are some examples of insoluble salts?
Calcium sulfate
Silver chloride
Most carbonates
What is an example of making an insoluble salt?
Silver nitrate
+
sodium chloride
>
silver chloride
+
sodium nitrate
What does silver chloride appear as?
Tiny particles suspended
in the solution which is a
precipitate
What can you do to the silver chloride precipitate?
It can be
filtered
,
washed
and
dried
in an
oven
Is a base insoluble in water?
Yes
What is the process in using a base to create a salt?
Base
is
added
until
no
more will
dissolve
Remove
excess
to obtain
pure solution
through
filter paper
Water
is
evaporated
to get
pure salt crystals
What method is used for alkali used to make a salt?
Titration
What is it called when a substance is added until no more will dissolve?
An excess
How is titration used to obtain a salt?
The method is done
without
using
universal indicator
What is the method of titration?
The
acid
with
universal indicator
is added to the
alkali
until it has made an appropriate
colour change
What are reactions with acids all?
Exothermic