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Section 3: Reactions in Aqueous Solutions

Reactions in Aqueous Solutions

1.

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Which of these is a spectator ion in the reaction 2NaOH(aq) + CuCl2 → 2NaCl(aq) + Cu(OH)2(s)?
A)Cu
B)Cl and Na
C)Na
D)OH
2.
What is the complete ionic equation for the following chemical equation?
Cl2(aq) + Na2SO4(aq) → BaSO4(s) + 2NaCl(aq)
A)Ba2+(aq) + Cl-(aq) + Na+(aq) + SO42-(aq) → Na+(aq) + Cl-(aq) + BaSO4(s)
B)Ba2+(aq) + 2Cl-(aq) + 2Na+(aq) + SO42-(aq) → 2Na+(aq) + 2Cl-(aq) + BaSO4(s)
C)BaCl2(aq) + 2Na+(aq) + SO42-(aq) → 2Na+(aq) + 2Cl-(aq) + BaSO4(s)
D)Ba2+(aq) + SO42-(aq) → BaSO4(s)
3.
In the chemical equation below, which of the components is a precipitate?
HCl(aq) + AgNO3(aq) → AgCl(s) + HNO3(aq)
A)HCl(aq)
B)AgNO3(aq)
C)AgCl(s)
D)HNO3(aq)
4.
The components of a chemical equation that are left after the spectator ions are removed are the ____________.
A)spectator ions
B)reactants
C)products
D)participating ions
5.
In the reaction below, which of the components will precipitate?
NaCl(aq) + KBr(aq) → KCl(aq) + NaBr(aq)
A)KCl(aq)
B)NaBr(aq)
C)KBr(aq)
D)none of the components precipitate
6.
Which of the following components will always be produced during a chemical reaction between an acid and a base?
A)an acid
B)a base
C)a gas
D)water
7.
Na+(aq) is a _________________ in the following complete ionic equation.
H+(aq) + Cl-(aq) + Na+(aq) + OH-(aq) → Na+(aq) + Cl-(aq) + H2O(l)
A)participating ion
B)reacting compound
C)reacting molecule
D)spectator ion
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