Unit Test — Unit test Answers
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Which rule for assigning oxidation numbers is correct?
A
Hydrogen is usually –1.B
Oxygen is usually –2.C
A pure group 1 element is +1.D
A monatomic ion is 0.23
Which statement describes a homogeneous catalyst?
A
It is in a gaseous phase only.B
It is in the same phase as the reactants.C
It is completely consumed by reactants.D
It forms different products than the uncatalyzed reaction forms.24
Which statement describes a chemical reaction?
A
Reactants form products when atoms change state.B
Products form reactants when atoms change state.C
Reactants form products when atoms are rearranged.D
Products form reactants when atoms are rearranged.25
Consider the equation below.What is the equilibrium constant expression for the given reaction?
A
K subscript e q equals StartFraction bracket upper C a upper O EndBracket over upper C a upper C upper O subscript 3 EndBracket EndFraction.
B
K subscript e q equals StartFraction StartBracket upper C upper O subscript 2 EndBracket StartBracket upper C a upper O EndBracket over StartBracket upper C a upper C upper O subscript 3 EndBracket EndFraction.
C
K subscript e q equals StartBracket upper C upper O subscript 2 EndBracket.
D
K subscript e q equals StartFraction 1 over StartBracket upper C upper O subscript 2 EndBracket EndFraction.
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