AnswersTX-Chemistry B-CRReactions in Aqueous Solutions

Reactions in Aqueous Solutions Answers

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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.
2
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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.
3

Which substance is a strong electrolyte?

A
NH3
B
Ba(OH)2
C
C12H22O11
D
CH3COOH
4

Which is an example of dissociation?

A
C + O2 CO2
Option A
B
NH3 + H2O NH4+ + OH–
Option B
C
SO2 + H2O HSO3– + H+
Option C
D
Ca3(PO4)2 3Ca2+ + 2PO43–
Option D
5

For an experiment, a student needs a compound that has the following properties.• It dissolves in water.• It is an electrolyte.• It is excellent conductor of electricity.Which substance would be the best choice for the experiment?

A
methanol
B
acetic acid
C
distilled water
D
potassium chloride
6

In which process do ionic compounds separate into their oppositely charged constituent ions when they are dissolved in water?

A
dissociation
B
electrolyte
C
hydration
D
ionization
7

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.
8

Shown below is an ion from a salt molecule.Which statement best explains the event?

Question illustration
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.
9

Which reaction would produce a solution that conducts electricity extremely well?

A
H3PO3(aq) H+(aq) + H2PO3–(aq)
Option A
B
CH3CH2COOH(aq) + H2O(l) H3O+(aq) + CH3CH2COO–(aq)
Option B
C
CH3CH2OH(l) CH3CH2OH(aq)
Option C
D
Ca(NO3)2(s) Ca2+(aq) + 2NO3–(aq)
Option D
10

Which substance will most likely ionize when it is dissolved in water?

A
HBr
B
CaBr2
C
MgCl2
D
KCl

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