Respuesta :
Increasing the activations energy barrier would not increase the rate of a chemical reaction .
What is chemical reaction?
Chemical reactions occur when chemical bonds between atoms are formed or broken. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.
What are the factors which can affect the rate of chemical reaction?
There are four main factors that can affect the reaction rate of a chemical reaction:
- Reactant concentration. Increasing the concentration of one or more reactants will often increase the rate of reaction. This occurs because a higher concentration of a reactant will lead to more collisions of that reactant in a specific time period.
- Physical state of the reactants and surface area. If reactant molecules exist in different phases, as in a heterogeneous mixture, the rate of reaction will be limited by the surface area of the phases that are in contact.
- Temperature. An increase in temperature typically increases the rate of reaction. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision
- Presence of a catalyst. A catalyst is a substance that accelerates a reaction by participating in it without being consumed. Catalysts provide an alternate reaction pathway to obtain products.
According to the question
1> Increasing the concentration of reactants
Increasing the concentration of one or more reactants will often increase the rate of reaction. This occurs because a higher concentration of a reactant will lead to more collisions of that reactant in a specific time period.
2> Increasing the activations energy barrier
The activation energy of a chemical reaction is closely related to its rate. Specifically, the higher the activation energy, the slower the chemical reaction will be.
3>Adding an enzyme
Enzymes help by putting the substrate(s) in the right position to react. Like all catalysts, enzymes increase the rate of chemical reactions by lowering the reaction's activation energy.
4>Increasing the temperature
An increase in temperature typically increases the rate of reaction. An increase in temperature will raise the average kinetic energy of the reactant molecules.
5>Adding a catalyst
A catalyst is a substance that accelerates a reaction by participating in it without being consumed.
Hence, Only Increasing the activations energy barrier would not increase the rate of a chemical reaction .
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