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

Q: Any chemical or physical change that absorbs energy O is an endothermic process. O is an exothermic…

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Q: Which of the following statements about catalysts is FALSE? A) Catalysts work by changing the…

A: Let us discuss some points related to catalyst and then we can solve the question.

Q: Many reactions that are thermodynamically possible do not occur at an appreciable rate because of…

A: If the Gibbs free energy of a reaction is negative then such reactions are spontaneous in nature.…

Q: The act of striking a match illustrates the role of activation energyin a chemical reaction.…

A: The act of striking a match illustrates the role of activation energyin a chemical reaction.

Q: Which energy difference in the energy profile below corresponds to the activation energy for the…

A: The energy profile given is

Q: Does a catalyst increase reaction rate by the same means as a rise in temperature does? Explain.

A: The reason why  catalyst increase reaction rate by the same means as a rise in temperature hs to be…

Q: How can the activation energy of a reaction be changed?

A: Activation energy of a reaction can be changed by using catalyst. A positive catalyst decrease the…

Q: grade 12 chemistry: How would you explain the concept of activation energy to someone who has only…

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Q: How do the activation energy and the energy of reaction determine if a chemical process is…

A: Activation energy is the minimum amount of energy required to start a reaction.  Every reaction…

Q: For the process, A = B + C, the activation energy and enthalpy value are 150 kJ and 120 kJ,…

A: Activation energy is the “extra energy required by the reactant species to reach the activated…

Q: For a reaction with reactant energy of 44 kJ and heat of reaction of 46 kJ and product energy of 90.…

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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: c) What is the activation energy in each direction? rate of the reverse reaction?

A: C) activation energy in forward direction= energy of activated comlpex-energy of rectants=…

Q: A certain reaction has an enthalpy of Δ?=39 kJ and an activation energy of ?a=56 kJ. What is the…

A: Thermodynamics is branch of chemistry in which we deal with heat gain or heat  lost by system to…

Q: 15) The activation energy of a chemical reaction is the energy A) must be removed from the mixture.…

A: The activation energy of a chemical reaction is the minimum energy that is required to break the…

Q: Which of the following would change the value of the activation energy for a heterogeneous reaction?…

A: The catalyst is a chemical species that increases the rate of a chemical reaction and it does not…

Q: Explain how enzymes increase the reaction rate for processes in cells of living organisms by…

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first 3 sub-parts…

Q: Which change does not increase the value of the rate constant for a reaction? (A) decreasing the…

A: The relationship rate constant of any reaction is given by  where K = rate constant  A = frequency…

Q: (a) What is a catalyst? (b) What is the difference betweena homogeneous and a heterogeneous…

A: a) Catalyst are defined as the substance which helps in increasing the rate of any reaction without…

Q: Part A Which statement is true regarding the function of a catalyst in a chemical reaction? A…

A: Given: Statements regarding catalyst.  To find: Correct statement Solution: Chemical kinetics is the…

Q: Use the following information to draw an energy diagram. 1. Label the potential energy in increments…

A: Answer:- This question is answered by using the simple concept of drawing the energy diagram of a…

Q: The following statements about activation energy are all factual, EXCEPT: A. Catalysts lower the…

A: Activation energy is defined as the minimum energy that needs to be acquired by the reactant…

Q: Which of the following statements below is true concerning the activation energy for a reaction?…

A: The energy profile diagram for the reaction is given as;

Q: What factors determine whether a collision between two reactant molecules will result in a reaction?…

A: Collision theory of reaction rate: According to the collision theory of reaction rate, the randomly…

Q: If two reactant particles collide with less than the activation energy required, what happens?

A: According to collision theory, the reactant particles must collide with sufficient energy to break…

Q: why the increasing concentration of only one reactant may not affect the reaction rate?

A: The question is based on the concept of chemical kinetics. it involves the identification of…

Q: Which of the following statement is TRUE for a slow reaction? (a) The values of the rate constant…

A: The slow step is the rate determining step of a chemical reaction. The energy diagram for a chemical…

Q: account for the relationship between the rate of a reaction and its activation energy, and the…

A: The relationship between the rate of a reaction and its activation energy - The activation energy of…

Q: This reaction has an activation energy of zero in the gas phase:CH3 + CH3------------->C2H6a.…

A: Given: Activation energy of the reaction=0

Q: (b) On the same diagram indicate the change or changes that result from the addition of the…

A: POTENTIAL ENERGY DIAGRAM: A diagram which depicts the energy changes occurring during a chemical…

Q: ) What is the activation energy in each direction? rate of the reverse reaction?

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Q: How is the rate of concentration expressed in terms of the concentration of the reactants of…

A: Rate is basically the speed with which the reaction is taking place i.e. how much the reaction is…

Q: Explain how to calculate the activation energy for the reaction

A: Activation energy is the minimum amount of energy needed to activate or energize molecules or atoms…

Q: A catalyst provides an alternate pathway for a reaction to occur. The alternate pathway has a lower…

A: The stoichiometry of the reaction does not change because when a catalyst is present in the reaction…

Q: How to find activation energy using the Arrhenius Equation

A: Activation energy is the minimum energy needed by the reactants to go to product state.

Q: What is the activation energy? explain it?

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Q: What is the activation energy of a reaction, and how is this energy related to the activated complex…

A: A chemical reaction proceeds with a minimum requirement of energy to be present with the reactants.…

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: Why is the reaction rate for reactants defined as the negative  of the change in reactant…

A: In a reaction, reactants forms products.The reactants are being used up for the formation of…

Q: Catalysts function by decreasing the required to form the transition state: Activation energy (A)…

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Q: Determine the activation energy for the reaction of OH with H, reaction.

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Q: catalyst speeds up a chemical reaction by lowering the reaction’s activation energy. Explain why/how…

A: The activation energy and the rate of reaction are inversly proportional. And catalalyst plays a…

Q: . a. Explain in your own words, what is meant by the term "activation energy." b. How can the idea…

A: 1.a  Activation energy is the minimum amount of energy required to start a chemical reaction.…

Q: 15) Answer the following questions by looking at the graph below. A catalyzed chemical reaction 90…

A: Activation energy is the energy we need to provide such that reaction can initiate.  When a catalyst…

Q: Determine the activation energy for the reaction of OH with H2 reaction.

A: K1 = 2.38 X 107                 T1 = 127 +273  = 400Kelvin K2 = 8.88 X 106                   T2 = 61…

Q: Calculate

A: Activation energy is the minimum amount of energy that is required by the reactants to result in a…

Q: The rate of a particular reaction quadruples when the temperature is increased from 25°C to 35°C.…

A: Rate of a reaction is quadruples. Initial temperature = 25°C   .....Or  because   °C + 273 = k…