The rate constant k for a certain reaction is measured at two different temperatures: temperature k 401.0 °C | 5.2 × 10° 270.0 °C 2.7 x 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 a mol ?
The rate constant k for a certain reaction is measured at two different temperatures: temperature k 401.0 °C | 5.2 × 10° 270.0 °C 2.7 x 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 a mol ?
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![### Reaction Rate Constants and Activation Energy
The rate constant \( k \) for a certain reaction is measured at two different temperatures and given in the following table:
| Temperature (°C) | \( k \) (1/s) |
|-------------------------|--------:|
| 401.0 °C | 5.2 × 10\(^9\) |
| 270.0 °C | 2.7 × 10\(^9\) |
Assuming the rate constant follows the Arrhenius equation, calculate the activation energy \( E_a \) for this reaction. Round your answer to 2 significant digits.
The Arrhenius equation is given as:
\[
E_a = \boxed{ \ \ \ \ \ \ \ \ } \text{kJ/mol}
\]
Note: The text accompanying the activation energy equation is missing, but typically, the relationship used is:
\[ E_a = \frac{R \cdot (T_1 \cdot T_2)}{T_2 - T_1} \cdot \ln \left( \frac{k_2}{k_1} \right) \]
where:
- \( k_1 \) and \( k_2 \) are the rate constants at temperatures \( T_1 \) and \( T_2 \) respectively,
- \( R \) is the gas constant, often taken as \( 8.314 \) J/(mol·K),
- \( T_1 \) and \( T_2 \) are absolute temperatures in Kelvin.
To convert temperatures from Celsius to Kelvin, add 273.15 to the value in Celsius:
\[ T_{Kelvin} = T_{Celsius} + 273.15 \]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F219723a0-65f7-41ee-870e-9a28c61ab761%2Fcfb75b19-6f17-4244-9060-97fa40d7159b%2Fjslil49_processed.png&w=3840&q=75)
Transcribed Image Text:### Reaction Rate Constants and Activation Energy
The rate constant \( k \) for a certain reaction is measured at two different temperatures and given in the following table:
| Temperature (°C) | \( k \) (1/s) |
|-------------------------|--------:|
| 401.0 °C | 5.2 × 10\(^9\) |
| 270.0 °C | 2.7 × 10\(^9\) |
Assuming the rate constant follows the Arrhenius equation, calculate the activation energy \( E_a \) for this reaction. Round your answer to 2 significant digits.
The Arrhenius equation is given as:
\[
E_a = \boxed{ \ \ \ \ \ \ \ \ } \text{kJ/mol}
\]
Note: The text accompanying the activation energy equation is missing, but typically, the relationship used is:
\[ E_a = \frac{R \cdot (T_1 \cdot T_2)}{T_2 - T_1} \cdot \ln \left( \frac{k_2}{k_1} \right) \]
where:
- \( k_1 \) and \( k_2 \) are the rate constants at temperatures \( T_1 \) and \( T_2 \) respectively,
- \( R \) is the gas constant, often taken as \( 8.314 \) J/(mol·K),
- \( T_1 \) and \( T_2 \) are absolute temperatures in Kelvin.
To convert temperatures from Celsius to Kelvin, add 273.15 to the value in Celsius:
\[ T_{Kelvin} = T_{Celsius} + 273.15 \]
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