Chemistry

posted by .

A first order reaction has an activation enery of 50.0kJ/mol. When a catalyst is added the activation energy of the catalyzed reaction is Ea/2. Calculate the ration of k(uncatalyzed)/k(catalyzed) at 25 degree C.

  • Chemistry -

    I looked at this but didn't finish. I was looking at ln k = -Ea/(RT) + ln(A).

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    During activation energy... A. A catalyst lowers the activation energy by changing the reaction mechanism. B. A catalyst does not change the activation energy. C. A catalyst lowers the activation energy by changing the rate. D. A catalyst …
  2. Chemistry

    How does the activation energy of an uncatalyzed reaction compare with that of the catalyzed reaction?
  3. chemistry

    A certain reaction has a delta H= -75 kJ and an activation energy of 40 kJ. A catalyst is found that lowers the Activation energy of the forward reaction by 15 kJ. What is the activation energy of the reverse reaction in the presence …
  4. Chemistry

    One of the concerns about the use of Freons is that they will migrate to the upper atmosphere, where chlorine atoms can be generated by the following reaction: CCl2F2 --> CF2Cl + Cl Chlorine atoms can act as a catalyst for the destruction …
  5. chemistry

    For a one step reaction, the activation energy for the forward reaction is 40.0 kJ/mol and the enthalpy of reaction is -20.0 kJ /mol. Which statement below is true?
  6. chemistry

    I have two questions that I really don't understand. The first one is: A reaction proceeds with delta H=-10kJ/mol. The energy of activation of the uncatalyzed reaction is 150kJ/mol, whereas it is 100kJ/mol for the uncatalyzed reaction. …
  7. Chemistry

    Draw a reaction profile (diagram of energy vs reaction coordinate) for a hypothetical reaction AB +C <=> A+BC in which the foward reaction has an activation energy of 100kJ mol-1 and the backward reaction has an activation energy …
  8. Physics

    The activation energy for the isomerization ol cyclopropane to propene is 274 kJ/mol. By what factor does the rate of this reaction increase as the temperature rises from 256 to 297 oC?
  9. Chemistry

    A reaction proceeds with ∆ H = 40 kJ/mol. The energy of activation of the uncatalyzed reaction is 120 kJ/mol, whereas i t is 55 kJ/mol for the catalyzed reaction. How many times faster is the catalyzed reaction than the uncatalyzed …
  10. CHEMISTRY HELPPPP!!!!!!!!!

    Consider the decomposition of NH3 (g). 2 NH3 (g) → N2 (g) + 3 H2 (g) The reaction is catalyzed on a surface of either tungsten or osmium. The activation energies for the catalyzed and uncatalyzed reactions are given below. W …

More Similar Questions