# 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 of this same catalyst?

1. 9
1. Ea forward - Eareverse = delta H
25 - Er = -75
solve for Er.

e

posted by DrBob222

## Similar Questions

1. ### chemistry

In an exothermic reaction, delta H was found to be -40 kJ, and the activation energy to be 30 kJ. What would be the activation energy of the reverse reaction?
2. ### chemistry

An endothermic reaction was found to have an activation energy of 100 kJ. If this reaction is reversed, the activation energy is only 20 kJ. What is the value of delta H for the endothermic reaction?
3. ### 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
4. ### CHEm

Which term best describes the measure of the increase in the concentration of a product per unit time? activation energy, kinectics, reaction reaction rate, reaction time im stuck i think its activation energy can someone confirm
5. ### Chemistry

True or false 1. The energy of a collision between atoms or molecules must be greater than the activation energy for bonds to be broken? 2. Decreasing the temperature decreases the kinetic energy of the reactant, and the reaction
6. ### Chemistry - Equilibrium

(h) If a catalyst was added to the reaction, which quantities would change? (Select all that apply.) - the potential energy of the products - the potential energy of the reactants - the potential energy of the activated complex
7. ### Chemistry

The standard free energy of activation of a reaction A is 73.4 kJ molâ€“1 (17.5 kcal molâ€“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
8. ### The Nature of Chemical Reactions

1. Molarity is to moles of solute over liters of solution as molality is to A. molar concentration over molal concentration. B. moles of solute over kilograms of solvent. C. molal concentration over molar concentration. D. moles
9. ### help help help chemistry

why will no one answer this question? 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? a. The activation energy of
10. ### chemistry

The activation energy of a reaction is typically determined by calculating the rate constant for the reaction at two temperatures and then manipulating the Arrhenius equation. If you determine the reaction rate constants for a

More Similar Questions