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Chemistry
Paper 2
Catalyst
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Cards (52)
What are catalysts important for in commercial reasons?
They increase
reaction rate
and reduce
energy
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How do catalysts affect the reaction rate?
Catalysts
increase
the rate of a
reaction
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What happens to the chemical composition of a catalyst during a reaction?
It remains
chemically
unchanged
during the reaction
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What is the effect of using a catalyst on the products of a reaction?
It does
not
change the
products
of the
reaction
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What is required in large amounts when using a catalyst?
A
tiny
bit of catalyst is needed
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How do catalysts behave in terms of reactions they catalyze?
Catalysts
tend to be very
specific
to
reactions
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What happens if you use an old catalyst in a reaction?
It may
not
work
effectively
in the reaction
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How do catalysts decrease activation energy?
By providing an alternative
reaction pathway
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What is the relationship between activation energy and catalyzed reactions?
Catalyzed reactions have
lower
activation energy
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How do reaction profiles illustrate the effect of catalysts?
They show lower
energy barriers
for
catalyzed
reactions
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What do reaction profiles indicate about reactants and products?
They show
energy levels
of
reactants
and
products
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What do energy barriers in reaction profiles represent?
The energy required to
initiate
a reaction
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How does the presence of a catalyst affect the energy barrier?
It
lowers
the
energy barrier
for the
reaction
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What is the significance of the minimum energy amount needed for a reaction?
It determines if the
reaction
can
occur
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What is the role of reactants in a reaction profile?
They are shown at the
starting energy level
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What happens to the energy levels of products in a reaction profile?
They are shown at a lower energy level than
reactants
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How do catalysts influence the overall energy change of a reaction?
They
do not change the overall energy change
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What is the effect of catalysts on the energy needed for a reaction?
They
reduce
the
energy
needed for the
reaction
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Why are catalysts essential in industrial reactions?
They improve
efficiency
and reduce costs
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How do catalysts affect the speed of chemical reactions?
They
increase
the
speed
of chemical
reactions
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What is the primary function of a catalyst in a reaction?
To increase the
reaction rate
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What is the relationship between catalysts and activation energy?
Catalysts
lower
the
activation
energy required
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How do catalysts contribute to the efficiency of reactions?
By lowering
energy requirements
and speeding up reactions
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What is the effect of a catalyst on the energy profile of a reaction?
It lowers the
peak
of the energy profile
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How do catalysts affect the reactants in a reaction?
They do not alter the reactants'
chemical
structure
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What is the significance of the energy levels shown in reaction profiles?
They indicate the
stability
of reactants and products
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What do catalysts do to the energy barrier in a reaction?
They
lower
the
energy
barrier
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Why is it important to understand the role of catalysts in reactions?
They are crucial for optimizing
industrial
processes
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How do catalysts influence the overall reaction mechanism?
They provide alternative pathways with lower
energy
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What is the primary benefit of using catalysts in chemical reactions?
Increased
reaction rates
and reduced
energy costs
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How do catalysts affect the equilibrium of a reaction?
They do not affect the
position
of
equilibrium
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What is the impact of catalysts on the energy profile of a reaction over time?
They consistently
lower
the
energy
profile
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What is the effect of a catalyst on the activation energy of a reaction?
It
decreases
the activation energy
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Why are catalysts essential in biochemical reactions?
They
facilitate
reactions
necessary for
life
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How do catalysts contribute to the sustainability of chemical processes?
By reducing
energy consumption
and
waste
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What is the role of catalysts in industrial chemistry?
To enhance
reaction rates
and efficiency
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How do catalysts affect the overall energy change in a reaction?
They
do not change the overall energy change
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What is the significance of understanding catalysts in chemical engineering?
It is crucial for designing
efficient
processes
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What is the term for energy required to initiate a reaction?
Activation energy
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What is the role of catalysts in reactions?
Catalysts lower
activation energy
for reactions
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