Match the words in the left column to the appropriate blanks in the sentence on the right. Reset He positive slope On the graph of In[A] versus time, the rate constant, is the of the straight line. y-Intercept A negative slope In[A]:
Match the words in the left column to the appropriate blanks in the sentence on the right. Reset He positive slope On the graph of In[A] versus time, the rate constant, is the of the straight line. y-Intercept A negative slope In[A]:
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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![### Calculating the Rate Constant for a First-Order Reaction
To determine the rate constant for a first-order reaction from a graph, you can use the following methodology:
#### Instructions
1. **Graph Plotting**:
- Plot the natural logarithm of the concentration of reactant \([A]\) against time \(t\).
- The y-axis will represent \(\ln [A]\), and the x-axis will represent time \(t\).
2. **Graph Analysis**:
- The graph of \(\ln [A]\) versus time will yield a straight line if the reaction is first-order.
#### Matching Concepts to Graph Analysis
**Fill-in-the-Blank Question:**
- **Sentence**: "On the graph of \(\ln[\text{A}]\) versus time, the rate constant, \_\_\_\_, is the \_\_\_\_ of the straight line."
**Options to Fill in the Blanks**:
- positive slope
- negative slope
- y-intercept
- \(t\)
- \(A\)
- \(\ln[A]_t\)
- \(k\)
**Correct Answers**:
- First Blank: \(k\)
- Second Blank: negative slope
**Completed Sentence**: "On the graph of \(\ln[\text{A}]\) versus time, the rate constant, \(k\), is the negative slope of the straight line."
#### Practical Example:
Consider you have graph data where:
- The y-axis (vertical) shows \(\ln [A]\).
- The x-axis (horizontal) shows time \(t\).
Plot the data points, draw the best-fit straight line through these points, and determine the slope of the line. The negative of this slope equals the rate constant \(k\) for the first-order reaction.
#### Conclusion
Understanding how to extract the rate constant from a graphical analysis is crucial in chemical kinetics. This method allows for an accurate determination of reaction rates and understanding of reaction mechanisms.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc25f84cd-37fe-4eda-bb3a-0db4abed4038%2F1d1d0bbd-09f8-459d-822c-c26e42f34361%2Fbyyrqc_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Calculating the Rate Constant for a First-Order Reaction
To determine the rate constant for a first-order reaction from a graph, you can use the following methodology:
#### Instructions
1. **Graph Plotting**:
- Plot the natural logarithm of the concentration of reactant \([A]\) against time \(t\).
- The y-axis will represent \(\ln [A]\), and the x-axis will represent time \(t\).
2. **Graph Analysis**:
- The graph of \(\ln [A]\) versus time will yield a straight line if the reaction is first-order.
#### Matching Concepts to Graph Analysis
**Fill-in-the-Blank Question:**
- **Sentence**: "On the graph of \(\ln[\text{A}]\) versus time, the rate constant, \_\_\_\_, is the \_\_\_\_ of the straight line."
**Options to Fill in the Blanks**:
- positive slope
- negative slope
- y-intercept
- \(t\)
- \(A\)
- \(\ln[A]_t\)
- \(k\)
**Correct Answers**:
- First Blank: \(k\)
- Second Blank: negative slope
**Completed Sentence**: "On the graph of \(\ln[\text{A}]\) versus time, the rate constant, \(k\), is the negative slope of the straight line."
#### Practical Example:
Consider you have graph data where:
- The y-axis (vertical) shows \(\ln [A]\).
- The x-axis (horizontal) shows time \(t\).
Plot the data points, draw the best-fit straight line through these points, and determine the slope of the line. The negative of this slope equals the rate constant \(k\) for the first-order reaction.
#### Conclusion
Understanding how to extract the rate constant from a graphical analysis is crucial in chemical kinetics. This method allows for an accurate determination of reaction rates and understanding of reaction mechanisms.
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