. The rate constant for a first-order reaction is 1.7 × 10–2 s–1 at 676 K and 3.9 × 10–2 s–1 at 880 K. Determine the activation energy of the reaction. (R = 8.314 J/K⋅mol)

Q: Consider the two‑step mechanism for the destruction of ozone. step 1: O3(g)+HO(g)⟶HO2(g)+O2(g) step…

A: Answer: catalyst: HO and Type: homogeneous A catalyst is a species that is present at the starting…

Q: Sketch a potential-energy diagram for the decomposition of nitrous oxide. N2O(g)→N2(g) +O(g) The…

A:

Q: Account for the increase in reaction rate brought about by a catalyst.

A: Catalyst role is to control the rate of reaction. It don't get consumed after the reaction.

Q: Problem attached

A: According to Arrhenius theory, the reaction can take place when the reactant molecules collide to…

Q: The rate constant for the reaction 2X → Y is 9.00 × 10–3 L mol–1min–1. How long will it take the…

A: It will take 1.125×10^-3 min

Q: The rate of chemical reaction is affected or influenced by several factors. SATA *   choose 5…

A:

Q: This question has multiple parts. Work all the parts to get the most points. For the decomposition…

A: In exothermic reactions energy of products is less than that of energy of reactants. That means…

Q: Why does a reaction's activation energy not show in the reaction's final G?

A: a reaction's activation energy not show in the reaction's final G

Q: deltaG tells us if a reaction can occur, but not if a reaction will actually occur. What measurement…

A: The Gibbs free energy tells about the energy which can be used for doing useful work. This parameter…

Q: The activation energy for the reaction H2(g) + I2(g) → 2 HI(g) is 165 kJ/mol, and ∆E for the…

A: Given reaction,    H2(g) + I2(g) → 2 HI(g) Activation energy for the reaction is 165 kJ/mol, and ∆E…

Q: Br + Br2 hv Br +

A:

Q: What is the activation energy for a reaction if the rate constant is 1.75 × 10 -4 s -1 at 220°C K…

A:

Q: There are two fundamental types of catalysts. What are these catalysts and how do they modify the…

A: Two types of catalysts are there which can affect the rate of reaction.

Q: For a chemical reaction, the activation energy for the forward reaction is +181 kJ and the…

A: The overall energy change for the forward reaction is the difference in energy between products and…

Q: List the Elementary Reactions?

A: Elementary reactions have to be listed below.

Q: The activation energy, Ea, for a particular reaction is 37.8 kJ/mol. If the rate constant at 280 K…

A: We have to predict the value of rate constant at different temperature.

Q: A certain reaction has an activation energy of 61.40 kJ/mol. At what Kelvin temperature will the…

A: Given:  Activation energy, Ea = 61.40 kJ/mol = 61400 J/mol  Let K1 = K , then K2 = 5.5K  T1 = 323 K…

Q: Define activation energy. What role does activation energy play in chemical kinetics?

A: The branch of chemistry that deals with the rates of a chemical reaction or we can say that the…

Q: 2. The rate constant for the forward reaction is equal to the rate constant of the reverse reaction.

A: At equilibrium concentrations of reactants and products remain unchanged. In other words the…

Q: The rate constant of a reaction is 4.50 x 10-5 L/mols at 195 oC and 3.20 x 10-3 L/mols at 258oC.…

A: Record the given data, k1 = 14.50 x 10-5 L/moles k2 = 3.20 x 10-3 L/moles T1= 195ºC T2= 258ºC Ea = ?…

Q: For an endothermic reaction, which statement is true? The activation energy for going from…

A: The activation energy for the endothermic reaction is much greater than for the exothermic reaction.…

Q: Explain the role of a catalyst in the design of practical chemical reactions.

A: The role of a catalyst in the design of practical chemical reactions has to be given,

Q: 3. For the reaction NO2(g) + CO(g) → NO(g) + CO2(g) the activation energy is 125 kJ/mol and the H…

A: Activation energy is the minimum amount of energy that is required to activate the molecules or…

Q: 2a) Briefly explain, in your own words, the difference between the "activation energy" of a reaction…

A: (2a)  Activation energy of a reaction  Activation energy is introduced by a scientist named Svante…

Q: For a chemical reaction, the activation energy for the forward reaction is +187 kJ and the…

A: The overall energy change is equal to the difference of the activation energy for the forward and…

Q: Which of the following statements are true? I. Activation energy of a reaction is smaller at higher…

A: Activation energy: The excess energy that the reactant molecules having energy less than the…

Q: What is ∆H (in kJ/mol) for a reaction where the activation energy is 250 kJ/mol while the activation…

A: Applying Formula of activation energy Ea1= ∆H + Ea2

Q: 10. For the reaction BrO, + 5Br+ 6H* -----> 3Br, + 3H,0 at a particular time, A[BrO,1/A t = 1.5 x…

A: For the given reaction : 15×-∆Br-∆t=-∆BrO3-∆t  15×-∆Br-∆t=1.5 × 10-2 M/s -∆Br-∆t= 5 ×1.5 × 10-2 M/s…

Q: for the reaction X + aY = C the following information is given: the concentration of the substances…

A: Given Reactiion X + aY  <--------------> C value of a = To be determined Hint : Concentration…

Q: Consider the reaction data.   A⟶products ?  (?) ?  (?−1) 325 0.391 575 0.735 What two points…

A:

Q: Chemistry 2. The following experimental data are obtained for the decomposition of nitrogen…

A: The integrated rate law for first order reaction is  lnNO2 =-kt+constant So, if the plot of lnNO2 vs…

Q: Find the rate constant (k)

A: Since we know that, for different order of reactions, the relationship between the concentration of…

Q: Addition of a catalyst to a reaction lowers the activation energy of at least one step in the…

A: Concept Introduction: A substance that helps a chemical reaction to proceed faster.

Q: Do catalysts affect the overall enthalpy change for a reaction, the activation energy, or both?

A: The substances that are used to increase the speed of the reaction are termed catalysts. Their…

Q: Which of the following collisions will initiate the reaction? The energy of the collision is written…

A: To initiate the reaction by a collision is possible only when the collision energy is equal to or…

Q: If the activation energy of a reaction increases, what happens to the rate constant (k)?   A. the…

A: From the Arrhenius Equation: Ea: Activation Energy. R: Gas Constant (8.314 JK-1mol-1) T:…

Q: Consider a possible gas-phase reaction between Ca+ and CH4+ to yield Ca+2 and CH4. What important…

A: Collision theory, theory used to predict the rates of chemical reactions, particularly for gases.…

Q: A chemistry graduate student is studying the rate of this reaction: H2CO3(ag)>>>H2O(aq)+CO2(aq) She…

A: H2CO3(ag) --->H2O(aq) +CO2(aq)  We have to prediction the rate of reaction and value of reaction…

Q: f the activation energy of a reaction increases, what happens to the rate constant (k)? A.the rate…

A: Arhenius equation gives the relation between rate constant and activation energy. k = A e -(Ea/RT)…

Q: A certain 2nd order reaction is known to proceed by a two-step process such that k1<<k2.  The…

A: Energy diagram can be plotted by considering activation energies of reaction steps involved.

Q: (i). Discuss the role of catalysts in controlling the reaction rate in terms of its activation…

A:

Q: What is ∆H (in kJ/mol) for a reaction where the activation energy is 250 kJ/mol while the activation…

A: ∆H (in kJ/mol) of the reaction is to be calculated The formula to calculate the ∆H of a reaction is

Q: Consider the following reaction: A (g) + 2B (g) → C (g) + D (g) Is this reaction likely to be an…

A: An elementary step (or elementary reaction) is one step in a series of simple reactions that show…

Q: 2c) Briefly describe what effect, if any, a catalyst has on the activation energy and the net free…

A: A catalyst: alters the rate of reaction without being consumed in the reaction. Catalyst have effect…

Q: Define ‘activation energy’ of a reaction.

A: Rate of reaction is defined as ratio of change in concentration of reactant or product by the time…

Q: 18. Which of these reactions appear to involve a catalyst? In those cases where a catalyst is…

A: Given reaction is CH3COOCH3(aq)   +   H2O(l) -------&gt;      CH3COOH(aq)    +       CH3OH(aq) The…

Q: In the following chemical reaction A + B → 2C + 40KJ  at a certain temperature, if you know that…

A: This problem can be solved from the concept of chemical kinetics. this is an exothermic reaction as…