Reactions in Aqueous Solutions Answers
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1
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Which substance will most likely ionize when it is dissolved in water?
A
HBrB
CaBr2C
MgCl2D
KCl2
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Which is an example of dissociation?
A
C + O2 CO2
B
NH3 + H2O NH4+ + OH–
C
SO2 + H2O HSO3– + H+
D
Ca3(PO4)2 3Ca2+ + 2PO43–
3
Which reaction would produce a solution that conducts electricity extremely well?
A
H3PO3(aq) H+(aq) + H2PO3–(aq)
B
CH3CH2COOH(aq) + H2O(l) H3O+(aq) + CH3CH2COO–(aq)
C
CH3CH2OH(l) CH3CH2OH(aq)
D
Ca(NO3)2(s) Ca2+(aq) + 2NO3–(aq)
4
Which is a characteristic of a nonelectrolyte?
A
It does not dissociate or ionize in water.B
It partially dissociates or ionizes in water.C
It conducts electricity poorly.D
It conducts electricity extremely well.5
Nonelectrolytes fail to ionize or dissociate in water because
A
they are very weakly bonded to each other.B
they are very strongly bonded to each other.C
the water molecules keep them together by hydration.D
they are forced together by the repulsion of water molecules.6
Consider the reaction below.Zn(s) + 2HCl(aq) H2(g) + ZnCl2(aq)Which product is a substance that is dissolved in solution?
A
ZnB
H2C
HClD
ZnCl27
Shown below is an ion from a salt molecule.Which statement best explains the event?
A
This is hydration, which occurs during ionization.B
This is hydration, which occurs during dissociation.C
This is the formation of electrolytes during ionization.D
This is the formation of ions from a covalent compound.8
Which formula represents a double displacement reaction?
A
Ca(OH)2(s) CaO(s) + H2O(g)
B
C2H5OH(I) + O2(g) CO2(g) + H2O(g)
C
Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g)
D
Pb(NO3)2(aq) + 2HCl(aq) 2HNO3(aq) + PbCl2(s)
9
Which is a characteristic of a weak electrolyte?
A
It does not dissociate or ionize in water.B
It partially dissociates or ionizes in water.C
It does not conduct electricity.D
It easily conducts electricity.10
Which chemical reaction involves the production of a gas?
A
2Li(s) + F2(g) 2LiF(s)
B
Zn(s) + 2HCl(aq) H2(g) + ZnCl2(aq)
C
HNO3(l) + H2O(l) H3O+(aq) + NO3–(aq)
D
K2CrO4(aq) + Ba(NO3)2(aq) BaCrO4(s) + 2KNO3(aq)
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