Welcome to the Quiz!
This quiz contains 13 questions from a mix of 1 subtopics.
Which type of catalyst has a different physical state from the reactants?
homogeneous
heterogeneous
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What is the term for a catalyst that has the same physical state as the reactants?
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Peroxodisulfate ions, S2O82-, oxidise ions to .
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Which type of catalysis occurs when the catalyst is in the same phase as the reaction mixture?
homogeneous catalysis
heterogeneous catalysis
enzymatic catalysis
autocatalysis
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What is the role of catalysts in a chemical reaction?
to change the chemical composition of the reactants
to slow down the reaction and conserve resources
to increase the temperature of the reaction
to speed up the reaction without being chemically changed
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Which type of catalyst is present in a different phase than the reactants?
autocatalyst
homogeneous catalyst
transition metal catalyst
heterogeneous catalyst
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What is the purpose of increasing the surface area of a catalyst?
to increase the cost of the catalyst
to improve the efficiency of the catalyst
to decrease the efficiency of the catalyst
to decrease the surface-to-mass ratio
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Which process uses iron as a catalyst?
the Contact process
the oxidation of ethanedioic acid
the destruction of the ozone layer
the Haber process
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Which vanadium species acts as the catalyst in the Contact process?
V2O3
V2O5
VO2
V2O4
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Which vanadium species is an intermediate in the Contact process?
V2O3
VO2
V2O5
V2O4
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Which manganese species acts as the catalyst in the oxidation of ethanedioic acid, (COOH)2?
Mn2O3
Mn3+
MnO4-
Mn2+
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Which manganese species is an intermediate in the oxidation of ethanedioic acid, (COOH)2?
Mn2+
MnO4-
Mn3+
Mn2O3
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Catalyst is the process which describes the build up unwanted impurities on the surface of the catalyst.
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