Formula Units, Total Ionic, And Net Ionic Equations Worksheet
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3Formula Units, Total Ionic, and Net Ionic Equations
Name: _____KEY___________
U9LM2B-WS
1. A chemical equation that shows only formula units of reactants and products followed by their physical
states is called
formula unit equation.
2. Strong electrolytes exist predominantly as
ions
in aqueous solutions.
3.
Weak electrolytes
slightly break into ions in aqueous solutions. They predominantly stay in their
unionized or un-dissociated forms.
4. A chemical equation that shows reactants and products in their predominant forms in aqueous solution is
called
total ionic
equation.
5. Nitric acid, HNO
is a strong acid. Therefore, it is a
strong
electrolyte and must be shown as
ions
in a total
3
ionic equation.
6. Strontium hydroxide, Sr(OH)
, is a
strong
base. Therefore, it is a
strong
electrolyte and must be shown as
2
ions
in a total ionic equation.
7. Ammonia, NH
, is a
weak
base. Therefore, it is a
weak
electrolyte and must be shown as
formula units
in
3
a total ionic equation.
8. Hydrofluoric acid, HF, is a
weak
acid. Therefore, it is a
weak
electrolyte and must be shown as
formula
units
in a total ionic equation.
9. Hydrosulfuric acid, H
S, is a
weak
acid. Therefore, it is a
weak
electrolyte and must be shown as
formula
2
units
in a total ionic equation.
10. Sulfuric acid, H
SO
is a
strong
acid. Therefore, it is a
strong
electrolyte and must be shown as
ions
in a
2
4
total ionic equation.
11. Sulfurous acid, H
SO
is a
weak
acid. Therefore, it is a
weak
electrolyte and must be shown as
formula
2
3
units
in a total ionic equation.
12. Acetic acid, CH
COOH, is a
weak acid.
Therefore, it is a
weak
electrolyte and must be shown as
formula
3
units
in a total ionic equation.
13. Copper (II) sulfate, CuSO
, is a
soluble
salt. Therefore, it is a
strong
electrolyte and must be shown as
ions
4
in a total ionic equation.
14. Zinc phosphate, Zn
(PO
)
, is an
insoluble
salt. Therefore, it must be shown as
formula unit
in a total ionic
3
4
2
equation.
15. A reactant or a product must be broken into its ions in a total ionic equation only if it is a
strong
electrolyte.
16. A reactant or a product must be written in its formula unit form in a total ionic equation if it is
weak
electrolyte, a non-electrolyte, or an insoluble
compound.
17. A chemical equation that shows only species that take an active part in the actual chemical reaction is
called
net ionic
equation.
18. Ions that show in the total ionic equation but do not participate in the actual chemical reaction are called
spectator ions.
19. Consider the following formula unit equation: Li
SO
(aq) + Ba(NO
)
(aq) BaSO
(s) + 2LiNO
(aq)
2
4
3
2
4
3
a. The strong electrolytes are:
Li
SO
Ba(NO
)
, LiNO
2
4,
3
2
3
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