The activation barrier for an uncatalyzed reaction is estimated to be 15.8 kcal/mol. The activation barrier...

The activation barrier for an uncatalyzed reaction is estimated to be 15.8 kcal/mol. The activation barrier for the catalyzed reaction is estimated to be 8.6 kcal/mol. How many times faster is the catalyzed rate versus the uncatalyzed rate? In other words, by what factor/coefficient do you have to multiply the uncatalyzed rate to equal the catalyzed rate? Assume the temperature is 298 K, and enter your answer to the nearest ones.

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queen_honey_blossom answered 2 years ago

The activation energy of an uncatalyzed reaction is 70.0 kJ/mol. When a catalyst is added, the...

The activation energy of an uncatalyzed reaction is 70.0 kJ/mol. When a catalyst is added, the activation energy (at 20.0 C) is 42.0 kJ/mol. Theoretically, to what temperature (C) would one have to heat the solution so that the rate of the uncatalyzed reaction is equal to the rate of the catalyzed reaction at 20. 0 C? Assume the frequency factor A is constant, and assume the initial concetrations are the same.

The standard free energy of activation of a reaction A is 75.1 kJ mol–1 (17.9 kcal...

The standard free energy of activation of a reaction A is 75.1 kJ mol–1 (17.9 kcal mol–1) at 298 K. Reaction B is one million times faster than reaction A at the same temperature. The products of each reaction are 10.0 kJ mol–1 (2.39 kcal mol–1) more stable than the reactants. (a) What is the standard free energy of activation of reaction B?

Suppose that a catalyst lowers the activation barrier of a reaction from 123 kJ/mol to 51...

Suppose that a catalyst lowers the activation barrier of a reaction from 123 kJ/mol to 51 kJ/mol . By what factor would you expect the reaction rate to increase at 25 ∘C? (Assume that the frequency factors for the catalyzed and uncatalyzed reactions are identical.) Express your answer using two significant figures. k2k1 =

Suppose that a catalyst lowers the activation barrier of a reaction from 122 kJ/mol to 59...

Suppose that a catalyst lowers the activation barrier of a reaction from 122 kJ/mol to 59 kJ/mol . Part A By what factor would you expect the reaction rate to increase at 25 ∘C? (Assume that the frequency factors for the catalyzed and uncatalyzed reactions are identical.)

Reaction A has an Eact of 10kcal/mol and reaction B had a Eact of 20 kcal/mol....

Reaction A has an Eact of 10kcal/mol and reaction B had a Eact of 20 kcal/mol. a. Which reaction is faster? Why? b. Explain what Eact means.

The activation energy for a reaction is changed from 184 kJ/mol to 59.3 kJ/mol at 600....

The activation energy for a reaction is changed from 184 kJ/mol to 59.3 kJ/mol at 600. K by the introduction of a catalyst. If the uncatalyzed reaction takes about 2653 years to occur, about how long will the catalyzed reaction take? Assume the frequency factor A is constant and assume the initial concentrations are the same

A) The activation energy of a certain reaction is 48.0 kJ/mol . At 27 ∘C ,...

A) The activation energy of a certain reaction is 48.0 kJ/mol . At 27 ∘C , the rate constant is 0.0120s−1. At what temperature in degrees Celsius would this reaction go twice as fast? B) Given that the initial rate constant is 0.0120s−1 at an initial temperature of 27 ∘C , what would the rate constant be at a temperature of 170. ∘C for the same reaction described in Part A?

a) The activation energy of a certain reaction is 47.0 kJ/mol . At 24 ∘C ,...

a) The activation energy of a certain reaction is 47.0 kJ/mol . At 24 ∘C , the rate constant is 0.0190s−1. At what temperature in degrees Celsius would this reaction go twice as fast? b)Given that the initial rate constant is 0.0190s−1 at an initial temperature of 24 ∘C , what would the rate constant be at a temperature of 100. ∘C for the same reaction described in Part A?

a,The activation energy of a certain reaction is 37.1 kJ/mol . At 30 ∘C , the...

a,The activation energy of a certain reaction is 37.1 kJ/mol . At 30 ∘C , the rate constant is 0.0170s−1. At what temperature in degrees Celsius would this reaction go twice as fast? b,Given that the initial rate constant is 0.0170s−1 at an initial temperature of 30 ∘C , what would the rate constant be at a temperature of 170. ∘C for the same reaction described in Part A?

Part A The activation energy of a certain reaction is 39.4kJ/mol . At 30 ?C ,...

Part A The activation energy of a certain reaction is 39.4kJ/mol . At 30 ?C , the rate constant is 0.0190s?1. At what temperature in degrees Celsius would this reaction go twice as fast? Express your answer with the appropriate units. Part B Given that the initial rate constant is 0.0190s?1 at an initial temperature of 30 ?C , what would the rate constant be at a temperature of 150 ?C for the same reaction described in Part A? Express...

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