Bonding And Nomenclature Chemical Worksheet - Unit 6 Page 10
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16Naming Acids
• If the compound begins with Hydrogen, it is an acid. If the acid does not contain a
polyatomic ion, write the prefix hydro-, then name the second element and
change the ending to –ic.’
o HCl
o HBr
o H
S
2
Naming Acids with Polyatomic Ions
The polyatomic ions you have memorized have –ate as the ending, so you name the polyatomic ion
and change the ending to –ic.
2-
Use sulfate (SO
) as the example
4
• H
SO
is sulfuric acid
2
4
2-
• If the ion has one more oxygen atom than the base (SO
), then the ion is named by adding the
4
prefix per- and the suffix –ic
o H
SO
is persulfuric acid
2
5
2-
• If the ion has one less oxygen atom than the base (SO
), then the ion is named with the
4
suffix –ous.
o H
SO
is sulfurous acid
2
3
2-
• If the ion has two less oxygen atoms than the base (SO
), then the ion is named with the prefix
4
hypo- and the suffix –ous.
o H
SO
is hyposulfurous acid
2
2
Name the following:
1. H
CO
2
3
2. H
PO
3
2
3. HClO
4
4. H
PO
3
3
Unit 6: Bonding and Nomenclature
Page 21
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