The graph above represents the change in concentration of a reactant versus time during a reversible reaction. The diagram below that shows the effect of a catalyst on the change in concentration for this reactant relative to its initial change is

The graph above represents the change in concentration of a reactant versus time during a reversible reaction. The diagram below that shows the effect of a catalyst on the change in concentration for this reactant relative to its initial change is

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter8: Reaction Rates And Equilibrium

Section: Chapter Questions

Problem 8.76E

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Question

Graph of concentration versus time
Concentration
Time
The graph above represents the change in concentration of a reactant versus time
during a reversible reaction. The diagram below that shows the effect of a catalyst
on the change in concentration for this reactant relative to its initial change is
Concentration
☐
Concentration
☐
Time
Concentration
►
Time
Concentration
Time
Time

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Step 1: Introduction to catalyst

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Step 2: Analysis of given curve

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Step 3: Effect of catalyst

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Step 4: Reason for incorrect choices

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How is it possible for a catalyst to give products from a reaction mixture that are different from those obtained when no catalyst or a different catalyst is used? Give an example.
If a textbook defined a catalyst as "a substance that increases the rate of a reaction," would that definition be adequate?
. Account for the increase in reaction rate brought about by a catalyst.
Consider the following statements: In general, the rate of a chemical reaction increases a bit at first because it takes a while for the reaction to get warmed up. After that, however, the rate of the reaction decreases because its rate is dependent on the concentrations of the reactants, and these are decreasing. Indicate everything that is correct in these statements, and indicate everything that is incorrect. Correct the incorrect statements and explain.