Catalysts

25 July 2022
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8 test answers

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question
Hydrogen gas reacts rapidly with oxygen gas in the presence of a platinum catalyst. Which equation correctly represents this reaction?
answer
2H2(g)+O2(g) Pt----->2H2O(g)
question
Which statement describes a heterogeneous catalyst?
answer
It is in a different phase than the reactants.
question
Which statement describes a homogeneous catalyst?
answer
It is in the same phase as the reactants.
question
Why does platinum metal make a good catalytic surface for reactant molecules?
answer
It holds reactant molecules in a good position for them to react.
question
Which reaction is an example of heterogeneous catalysis?
answer
Ethene gas reacts with hydrogen gas by using a nickel catalyst.
question
What advantage does a heterogeneous catalyst provide over a homogeneous catalyst in industrial processes?
answer
A heterogeneous catalyst can be easily separated from reactants.
question
Which catalyzed reaction breaks up ozone?
answer
b.
question
Which statement defines activation energy?
answer
It is the difference between reactant energy and maximum energy.