Question

#14 Rate Constant and Temperature

1. The rate constant (k) for a reaction was measured as a function of temperature. A plot of lnk versus 1/T (in K) is linear and has a slope of -1.01 x 10⁴ K. Calculate the activation energy for this reaction.

2. The rate constant of a reaction at 32.0^oC is 0.0550 s^-1. If the frequency factor is

1.20 x 10¹³ s^-1, what is the activation energy?

3. A reaction has a rate constant of 0.000122 s^-1 at 27.0^oC and 0.228 s^-1at 77.0^oC.

a. Determine the activation energy for this reaction.

b. What is the value of the rate constant at 17.0^oC?

4. A slightly bruised apple will rot extensively in about 4.00 days at room temperature, 25.0^OC. If the same apple is kept in the refrigerator at 5.0^OC, the same extent of rotting takes about 16.0 days. What is the activation energy for the rotting reaction?

Answer 1

Ans:) Activation energy is a a enrgy that must be given to a system to initiate or start that reaction.In this question basically the arhenius equation is used most. If their is any doubt please ask in commengt section and life if it helps you.

Thank you !