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Is it true that The activation energy of an endothermic reaction must be greater than the required ΔH?
No, it is not true that the activation energy of an endothermic reaction must be greater than the required ΔH. The activation energy (Ea) is the energy barrier that must be overcome for a reaction to proceed, while ΔH represents the overall change in enthalpy during the reaction. In an endothermic reaction, Ea can be less than, equal to, or greater than ΔH; it depends on the specific reaction mechanism and energy landscape.
What else can I help you with?
Does a chemical reaction become endothermic why?
A chemical reaction becomes endothermic when it absorbs heat from its surroundings, resulting in an increase in the internal energy of the system. This usually occurs when the energy required to break the bonds of the reactants is greater than the energy released when new bonds are formed in the products.
What is kinetic stability?
Kinetic stability refers to the ability of a substance to resist change or decomposition over time due to kinetic barriers in the reaction pathway. It is determined by the activation energy required for a reaction to occur. Higher activation energy leads to greater kinetic stability.
Effects of temperature and pressure on exothermic and endothermic reaction?
An increase in temperature favours an endothermic reaction over an exothermic one as an endothermic reaction takes in the energy from the higher temperature more easily than the exothermic reaction gives out even more energy to the surroundings. Therefore an increase in temperature increases the level of completion and viability of an endothermic reaction, and the opposite for an exothermic reaction. An increase in pressure favours any reaction that forms fewer molecules from more molecules. It does not necessarily favour an exothermic or an endothermic reaction as it depends on the number of molecules on either side of the reaction. An endothermic reaction involves the breaking of bonds to a greater extent than an exothermic reaction, so an increase in pressure would, in a lot of cases, favour the exothermic reaction more than the endothermic reaction.
Is more energy required for a chemical reaction in the absence of an enzyme?
Without an enzyme, the activation energy needed to start a reaction is much greater. An enzyme is a catalyst, which decreases the amount of activation energy needed to start a reaction. By doing so, it decreases the amount of time the chemical reaction takes place.
What kind of energy required to break bonds of reactants and the energy released when products form in an exergonic reaction?
The energy required to break bonds of reactants in an exergonic reaction is activation energy, which initiates the reaction. The energy released when products form is called the released or liberated energy. In exergonic reactions, the released energy is greater than the activation energy, resulting in a net release of energy.
Does a chemical reaction become endothermic why?
A chemical reaction becomes endothermic when it absorbs heat from its surroundings, resulting in an increase in the internal energy of the system. This usually occurs when the energy required to break the bonds of the reactants is greater than the energy released when new bonds are formed in the products.
Does a reaction take place if the energy of the collision is greater than or equal to the activation energy?
Yes, a reaction may occur if the energy of the collision is equal to or greater than the activation energy. This is because the collision provides enough energy to overcome the activation energy barrier and initiate the reaction.
What is kinetic stability?
Kinetic stability refers to the ability of a substance to resist change or decomposition over time due to kinetic barriers in the reaction pathway. It is determined by the activation energy required for a reaction to occur. Higher activation energy leads to greater kinetic stability.
Effects of temperature and pressure on exothermic and endothermic reaction?
An increase in temperature favours an endothermic reaction over an exothermic one as an endothermic reaction takes in the energy from the higher temperature more easily than the exothermic reaction gives out even more energy to the surroundings. Therefore an increase in temperature increases the level of completion and viability of an endothermic reaction, and the opposite for an exothermic reaction. An increase in pressure favours any reaction that forms fewer molecules from more molecules. It does not necessarily favour an exothermic or an endothermic reaction as it depends on the number of molecules on either side of the reaction. An endothermic reaction involves the breaking of bonds to a greater extent than an exothermic reaction, so an increase in pressure would, in a lot of cases, favour the exothermic reaction more than the endothermic reaction.
What is heat included in the equation of an endothermic reaction?
In an endothermic reaction, heat is included as a reactant in the chemical equation to show that the reaction absorbs energy from the surroundings in the form of heat to proceed. The reaction is usually represented as products being greater in energy content than the reactants due to the input of heat.
Is more energy required for a chemical reaction in the absence of an enzyme?
Without an enzyme, the activation energy needed to start a reaction is much greater. An enzyme is a catalyst, which decreases the amount of activation energy needed to start a reaction. By doing so, it decreases the amount of time the chemical reaction takes place.
What are the characteristics and implications of an endothermic nuclear reaction?
An endothermic nuclear reaction absorbs energy from its surroundings to occur. This type of reaction typically requires a higher input of energy to initiate and sustain compared to an exothermic reaction. The implications of an endothermic nuclear reaction include the potential for greater control over the reaction process and the ability to produce specific isotopes or elements through nuclear transmutation. Additionally, endothermic reactions can be used in nuclear power generation and scientific research to study nuclear processes.
What is endothermic and exothermic?
Exothermic refers to a reaction that produces heat. When you balance the equation the energy released when new bonds are formed is greater than the energy use when bonds are broken. An endothermic reaction takes in heat as it requires more energy to break its bonds than it has from the bonds it creates.
What kind of energy required to break bonds of reactants and the energy released when products form in an exergonic reaction?
The energy required to break bonds of reactants in an exergonic reaction is activation energy, which initiates the reaction. The energy released when products form is called the released or liberated energy. In exergonic reactions, the released energy is greater than the activation energy, resulting in a net release of energy.
In exothermic reactions the energy required to break the bonds in the reactants is greater than the energy released as the products form?
In exothermic reactions, the energy needed to break the bonds in the reactants is higher than the energy released when the products are formed. As a result, the excess energy is released to the surroundings in the form of heat. This results in a net release of energy during the reaction.
What is activation energy how is the rate constant of a reaction related to its activation energy?
In chemistry, activation energy is a term introduced in 1889 by the Swedish scientist Svante Arrhenius that means the minimum energy that must be input to a chemical system with potential reactants to cause a chemical reaction. Activation energy may also be defined as the minimum energy required to start a chemical reaction.The activation energy of a reaction is usually denoted by Ea and given in units of kilojoules per mole
An energy diagram shows the reactants having greater energy than the products illustrates what?
This shows that the reaction is endothermic because energy is absorbed in the reaction and not produced.
