The rate constant k for a certain reaction is measured at two different temperatures: temperature k 162.0 °C |3.0 × 1010 288.0 °C 9.1 × 10" Assuming the rate constant obeys the Arrhenius equation, calculate the activation energy E, for this reaction. Round your answer to 2 significant digits. kJ E = a mol ?
The rate constant k for a certain reaction is measured at two different temperatures: temperature k 162.0 °C |3.0 × 1010 288.0 °C 9.1 × 10" Assuming the rate constant obeys the Arrhenius equation, calculate the activation energy E, for this reaction. Round your answer to 2 significant digits. kJ E = a mol ?
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
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![### Determining Activation Energy via Arrhenius Equation
#### Problem Statement:
The rate constant \( k \) for a certain reaction is measured at two different temperatures:
\[
\begin{array}{|c|c|}
\hline
\text{temperature} & k \\
\hline
162.0 \,^{\circ}\text{C} & 3.0 \times 10^{10} \\
\hline
288.0 \,^{\circ}\text{C} & 9.1 \times 10^{11} \\
\hline
\end{array}
\]
#### Objective:
Assuming the rate constant obeys the Arrhenius equation, calculate the activation energy \( E_{\text{a}} \) for this reaction. Round your answer to 2 significant digits.
#### Solution:
Using the Arrhenius equation, we can determine the activation energy:
\[
E_{\text{a}} = \boxed{ \quad }\frac{\text{kJ}}{\text{mol}}
\]
Please note, to solve this problem practically, follow these steps:
1. Convert the temperatures from Celsius to Kelvin by adding 273.15.
2. Use the Arrhenius equation in its logarithmic form:
\[
\ln \left( \frac{k_2}{k_1} \right) = \frac{E_{\text{a}}}{R} \left( \frac{1}{T_1} - \frac{1}{T_2} \right)
\]
3. Solve for \( E_{\text{a}} \), where \( R \) is the gas constant.
#### Note:
Ensure to input values correctly for precise computation. This exercise reinforces the principles of chemical kinetics and the use of the Arrhenius equation in determining reaction parameters.
For interactive exploration and step-by-step calculation, use the educational tools provided below:
- Reset inputs: ![ ]
- Confirm calculation: ![ ✔️ ]
- Solve step-by-step: ![ ❓ ]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3ff5d2d4-0b71-46f6-9878-a59ffd2a7f15%2F07e6a2a9-aedb-4c93-a246-ab8a048f5b79%2F2to170c_processed.png&w=3840&q=75)
Transcribed Image Text:### Determining Activation Energy via Arrhenius Equation
#### Problem Statement:
The rate constant \( k \) for a certain reaction is measured at two different temperatures:
\[
\begin{array}{|c|c|}
\hline
\text{temperature} & k \\
\hline
162.0 \,^{\circ}\text{C} & 3.0 \times 10^{10} \\
\hline
288.0 \,^{\circ}\text{C} & 9.1 \times 10^{11} \\
\hline
\end{array}
\]
#### Objective:
Assuming the rate constant obeys the Arrhenius equation, calculate the activation energy \( E_{\text{a}} \) for this reaction. Round your answer to 2 significant digits.
#### Solution:
Using the Arrhenius equation, we can determine the activation energy:
\[
E_{\text{a}} = \boxed{ \quad }\frac{\text{kJ}}{\text{mol}}
\]
Please note, to solve this problem practically, follow these steps:
1. Convert the temperatures from Celsius to Kelvin by adding 273.15.
2. Use the Arrhenius equation in its logarithmic form:
\[
\ln \left( \frac{k_2}{k_1} \right) = \frac{E_{\text{a}}}{R} \left( \frac{1}{T_1} - \frac{1}{T_2} \right)
\]
3. Solve for \( E_{\text{a}} \), where \( R \) is the gas constant.
#### Note:
Ensure to input values correctly for precise computation. This exercise reinforces the principles of chemical kinetics and the use of the Arrhenius equation in determining reaction parameters.
For interactive exploration and step-by-step calculation, use the educational tools provided below:
- Reset inputs: ![ ]
- Confirm calculation: ![ ✔️ ]
- Solve step-by-step: ![ ❓ ]
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