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The rate constant, activation energy, an...

The rate constant, activation energy, and Arrphenius parameter of a chemical reaction are `3.0xx10^(-4)s^(-1), 104.4KJ mol^(-1)`, and `6.0xx10^(14)s^(-1)`, respectively. The value of rate constant as `Trarroo` is

A

`2.0xx10^(18)s^(-1)`

B

`6.0xx10^(14)s^(-1)`

C

`3.6xx10^(30)s^(-1)`

D

None of these

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To find the value of the rate constant \( k \) as the temperature \( T \) approaches infinity, we can use the Arrhenius equation: \[ k = A e^{-\frac{E_a}{RT}} \] where: - \( k \) is the rate constant, - \( A \) is the Arrhenius parameter (frequency factor), - \( E_a \) is the activation energy, - \( R \) is the universal gas constant, and - \( T \) is the temperature in Kelvin. ### Step-by-Step Solution: 1. **Identify the given values**: - Rate constant \( k = 3.0 \times 10^{-4} \, s^{-1} \) - Activation energy \( E_a = 104.4 \, kJ \, mol^{-1} \) - Arrhenius parameter \( A = 6.0 \times 10^{14} \, s^{-1} \) 2. **Convert activation energy to Joules**: Since \( R \) is typically in \( J \, mol^{-1} \, K^{-1} \), we need to convert \( E_a \) from kilojoules to joules: \[ E_a = 104.4 \, kJ \, mol^{-1} = 104400 \, J \, mol^{-1} \] 3. **Consider the limit as \( T \) approaches infinity**: As \( T \) approaches infinity, the term \( RT \) also approaches infinity. Therefore, the fraction \( \frac{E_a}{RT} \) approaches zero: \[ \frac{E_a}{RT} \to 0 \quad \text{as} \quad T \to \infty \] 4. **Evaluate the exponential term**: The exponential term becomes: \[ e^{-\frac{E_a}{RT}} \to e^0 = 1 \] 5. **Substitute back into the Arrhenius equation**: Now substituting this back into the Arrhenius equation: \[ k = A \cdot 1 = A \] 6. **Final calculation**: Since \( A = 6.0 \times 10^{14} \, s^{-1} \): \[ k = 6.0 \times 10^{14} \, s^{-1} \] Thus, the value of the rate constant \( k \) as \( T \) approaches infinity is: \[ \boxed{6.0 \times 10^{14} \, s^{-1}} \]

To find the value of the rate constant \( k \) as the temperature \( T \) approaches infinity, we can use the Arrhenius equation: \[ k = A e^{-\frac{E_a}{RT}} \] where: - \( k \) is the rate constant, ...
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