Using the data in the table, determine the rate constant of the Trial [A] (M) [B] (М) | Rate (M/s) reaction and select the appropriate units. 1 0.210 0.360 0.0175 0.210 0.720 0.0175 A + 2B → C +D 3 0.420 0.360 0.0700 k = Units 0.183 M-'s-1 Incorrect

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...
icon
Related questions
Question
### Determining the Rate Constant of a Reaction

**Objective**: Using the data in the table, determine the rate constant \( k \) of the reaction and select the appropriate units.

**Reaction**: 
\[ A + 2B \rightarrow C + D \]

### Data Table

| Trial | \([A]\) (M) | \([B]\) (M) | Rate (M/s) |
|-------|-------------|-------------|------------|
| 1     | 0.210       | 0.360       | 0.0175     |
| 2     | 0.210       | 0.720       | 0.0175     |
| 3     | 0.420       | 0.360       | 0.0700     |

### Rate Constant Calculation

**Incorrect Value Entered**: 
\[ k = 0.183 \]

**Correct Units**: 
\[ \text{Units} = M^{-1}s^{-1} \]

### Explanation

- **Trial Analysis**:

  - **Trial 1 and 2**: Comparing the data, \([A]\) remains constant while \([B]\) is doubled, but the rate does not change. This indicates that the reaction rate is independent of the concentration of B. 
  - **Trial 1 and 3**: Here, \([A]\) is doubled while \([B]\) remains constant, and the rate increases by a factor of 4. This suggests that the reaction order with respect to A is 2.

- **Rate Law Expression**: 
  \[ \text{Rate} = k[A]^2[B]^0 \]
  Simplifies to:
  \[ \text{Rate} = k[A]^2 \]

- **Determining \( k \) Using Trial 1**:
  \[ 0.0175 \, M/s = k (0.210 \, M)^2 \]
  \[ k = \frac{0.0175}{(0.210)^2} \]
  \[ k = 0.397 \, M^{-1}s^{-1} \]

#### Conclusion:

\[ k = 0.397 \, M^{-1}s^{-1} \]

The previously entered value \( k = 0.183 \) was incorrect. Based on the data and correct analysis,
Transcribed Image Text:### Determining the Rate Constant of a Reaction **Objective**: Using the data in the table, determine the rate constant \( k \) of the reaction and select the appropriate units. **Reaction**: \[ A + 2B \rightarrow C + D \] ### Data Table | Trial | \([A]\) (M) | \([B]\) (M) | Rate (M/s) | |-------|-------------|-------------|------------| | 1 | 0.210 | 0.360 | 0.0175 | | 2 | 0.210 | 0.720 | 0.0175 | | 3 | 0.420 | 0.360 | 0.0700 | ### Rate Constant Calculation **Incorrect Value Entered**: \[ k = 0.183 \] **Correct Units**: \[ \text{Units} = M^{-1}s^{-1} \] ### Explanation - **Trial Analysis**: - **Trial 1 and 2**: Comparing the data, \([A]\) remains constant while \([B]\) is doubled, but the rate does not change. This indicates that the reaction rate is independent of the concentration of B. - **Trial 1 and 3**: Here, \([A]\) is doubled while \([B]\) remains constant, and the rate increases by a factor of 4. This suggests that the reaction order with respect to A is 2. - **Rate Law Expression**: \[ \text{Rate} = k[A]^2[B]^0 \] Simplifies to: \[ \text{Rate} = k[A]^2 \] - **Determining \( k \) Using Trial 1**: \[ 0.0175 \, M/s = k (0.210 \, M)^2 \] \[ k = \frac{0.0175}{(0.210)^2} \] \[ k = 0.397 \, M^{-1}s^{-1} \] #### Conclusion: \[ k = 0.397 \, M^{-1}s^{-1} \] The previously entered value \( k = 0.183 \) was incorrect. Based on the data and correct analysis,
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 3 images

Blurred answer
Knowledge Booster
Rate Laws
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY