The enthalpy of activation of a first order reaction is 111 kJ/mole. The rate constant at...
Consider an elementary first order reaction found to have an activation energy (EA) of 250 kJ/mole and a pre-exponential (A) of 1.7 x 1014 s–1. (a) Determine the rate constant at T = 750°C. (b) At what temperature will the reaction be three times as fast as at 750°C? (c) What fraction of the reaction will be completed in a batch reactor at 300°C over a period of 10 minutes?
3) The rate constant of a first order reaction is 2.6 x 10+ s' at 255 °C. If the activation energy is 99.9 KJ/mol, calculate the temperature at which its rate constant is 4.8 x 104 sl.
A first order chemical reaction has an energy of activation of 90.0 kJ/mol and a rate constant of 0.0275 s-1 at 20oC. Find the rate constant for the chemical reaction at 50oC. R = 8.31447215 J/(mol×K)
_13) The activation energy of a reaction is 100 kJ/mole. The increase in the rate constant when its temperature is raised from 295 to 300 K is approximately: A) 50% B) 100% C) 10% D) 25%
The activation energy for a reaction is 226.0 KJ/mol. If the rate constant is 1.20 x 10-4 S-1 at 500.0 C, what is the rate constant at 600 C
The rate constant of a first order reaction is 4.20 x 10^-4 s^-1 at 3.50 degrees C. If the activation energy is 149 kJ/mol, calculare the temperature at which its rate constant is 6.90 x 10^-4 s^-1.
12. The first-order rate constant for the reaction of methyl chloride (CH3Cl) with water to produce methanol (CH3OH) and hydrochloric acid (HCl) is 3.32 × 10−10 s−1 at 25°C. Calculate the rate constant at 52.1°C if the activation energy is 116 kJ/mol. _____ ×10^____ s−1 (Enter your answer in scientific notation.) 14. The rate constant of a first-order reaction is 2.75 × 10−4 s−1 at 350.°C. If the activation energy is 101 kJ/mol, calculate the temperature at which its rate constant...
The uncoiling of DNA is a first order reaction. Its activation energy is 420 kJ at 37degree C, the rate constant is 4.90 times 10^-4 min^-1. What is the half-life of the uncoiling if the organism has a temperature of 37degree C (104degreeF).
2. The activation energy for the following first-order reaction is 102 kJ/mol. N2O(g) → 2NO(g) + 1/2O2(g) The value of the rate constant (k) is 1.35 x 10-s-1 at 35°C. What is the value of k at 20°C? (6 points)
The rate constant of a first-order reaction is 2.60 × 10−4 s−1 at 350°C. If the activation energy is 159 kJ/mol, calculate the temperature at which its rate constant is 9.35 × 10−4 s−1