When the temperature of a gas whose activation energy is 85 kJ/mol is increased from 370K to 400 K, the fraction of collisions with enough energy to react...
Decreases by a factor of 2;
Decreases by a factor of 4;
Increases by a factor of 4;
Increases by a factor of 8.
Provide the calculation of f @ 400 K and f @ 370 K to prove your choice for the answer.
When the temperature of a gas whose activation energy is 85 kJ/mol is increased from 370K...
What is the activation energy (in kJ/mol) of a reaction whose rate constant increases by a factor of 89 upon increasing the temperature from 307 K to 343 K? R = 8.314 J/(mol • K).
The activation energy for the isomerization of cyclopropane to propene is 274 kJ/mol. By what factor does the rate of this reaction increase as the temperature rises from 257 to 280 degree C? The factor is the ratio of the rates. Since rate is directly proportional to rate constant, the factor is also ratio of rate constants Make sure your units are correct and cancel properly and use the correct expression: k= Ae^-E_a/RT A catalyst decreases the activation energy of...
Be sure to answer all parts. By what factor does the fraction of collisions with energy equal to or greater than activation energy of 100. kJ/mol change if the temperature increases from 21.0 ° C to 59.0 ° C? Give your answer in scientific notation. Be sure to answer all parts. By what factor does the fraction of collisions with energy equal to or greater than activation energy of 100. kJ/mol change if the temperature increases from 21.0 ° C...
1) Calculate the activation energy in kJ/mol for the following reaction if the rate constant for the reaction increases from 93.5 M-1s-1 at 497.7 K to 1349.3 M-1s-1 at 636.7 K. do not include units, but make sure your answer is in kJ/mol! 2) A chemist constructs a plot of ln k vs. 1/T for a chemical reaction. The slope of the trendline for the data is -746 K. What is the activation energy for this reaction in kJ/mol? R...
Consider a system with an activation energy of 50.0 kJ mol-1. Use the Arrhenius equation to determine by what factor the rate constant of the reaction will change when the temperature is doubled, from 200 K to 400 K, all other factors being equal. (In other words, if you double the temperature, what happens to the rate constant k?)
The activation energy of a particular reaction is 83.1 kJ/mol. By what factor will the rate constant increase when the temperature is increased from 50 °C to 60 °C?
The activation energy for a reaction is 15 kJ mol-1 at 27° C. A catalyst lowers the activation energy to 10 kJ mol at the same temperature. By what factor is the reaction rate increased? Assume that the reactant concentrations and the pre-exponential factor in the Arrhenius equation are unchanged. O A. 1.5 OB. 1.1 OC. 0.67 O D.7.4 O E. 1.7 x 107 Reset Selection
The activation energy of a certain uncatalyzed biochemical reaction is 46.7 kJ/mol. In the presence of a catalyst at 39ºC, the rate constant for the reaction increases by a factor of 2030 as compared with the uncatalyzed reaction. Assuming the frequency factor A is the same for both the catalyzed and uncatalyzed reactions, calculate the activation energy for the catalyzed reaction. Activation energy = kJ/mol
The activation energy of a certain uncatalyzed biochemical reaction is 47.2 kJ/mol. In the presence of a catalyst at 38ºC, the rate constant for the reaction increases by a factor of 2050 as compared with the uncatalyzed reaction. Assuming the frequency factor A is the same for both the catalyzed and uncatalyzed reactions, calculate the activation energy for the catalyzed reaction. Activation energy = kJ/mol
Why does the pressure of a gas sample increase when the
temperature is increased? Assume the volume remains constant.
Select all that apply.
Why does the pressure of a gas sample increase when the temperature is increased? Assume the volume remains constant. Select all that apply. Choose one or more: O A. The average kinetic energy of the gas increases as the temperature increases, causing more energetic collisions with the walls. O B. As the temperature of the gas increases,...