Straighterline chem 101 exam 2 with questions and answers

The distinguishing characteristic of all nonelectrolyte solutions is that they
Select one:
a. contain ions.
b. do not conduct electricity.


c. react with other solutions.
d. always contain acids.
e. conducts heat.
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The correct answer is: do not conduct electricity.
Question 2
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If aqueous solutions of Mg(C2H3O2)2 and LiOH are mixed, which insoluble precipitate is formed?
Select one:
a. LiC2H3O2
b. Li(C2H3O2)2
c. MgOH
d. Mg(OH)2


e. CH3OH
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The correct answer is: Mg(OH)2
Question 3
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The substance NH3 is considered to be
Select one:
a. a weak acid.
b. a weak base.
c. a strong acid.
d. a strong base.
e. neither acidic nor basic.


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The correct answer is: a weak base.
Question 4
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What volume of a 0.452 M NaOH solution is needed to neutralize 85.0 mL of a 0.176 M solution of H2SO4?

, Select one:
a. 218.3 mL
b. 66.2 mL


c. 38.4 mL
d. 436.6 mL
e. 33.1 mL
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The correct answer is: 66.2 mL
Question 5
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A 34.62-mL of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H2SO4 solution. What is the
concentration of the original sulfuric acid solution?
Select one:
a. 0.0229 M
b. 0.218 M
c. 0.0523 M


d. 0.209 M
e. 0.105 M
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The correct answer is: 0.0523 M
Question 6
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Which chemical equation describes a combustion reaction?
Select one:
a. 2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(l)


b. LiOH(aq) + HNO3(aq) → LiNO3(aq) + H2O(l)
c. N2(g) + 3H2(g) → 2NH3(g)
d. 2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)
e. 2Al(s) + 3H2SO4(aq) → Al2(SO4)3(aq) + 3H2(g)
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The correct answer is: 2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(l)
Question 7
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