The answer is B as activation energy is the least possible amount of energy (minimum) which is required to start a reaction or the amount of energy available in a chemical system for a reaction to take place.
Which definition best describes activation energy?
Activation energy can be defined as the minimum energy that is required to just initiate the chemical reaction .
How would you describe the activation energy for this reaction?
The activation energy for the forward reaction is the amount of free energy that must be added to go from the energy level of the reactants to the energy level of the transition state .
What is the activation energy of a reaction simple definition?
Activation energy, in chemistry, the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport .
Which is the best definition of activation energy quizlet?
Which is the best definition of activation energy? the energy required to form or break the bonds of reactant molecules .
What are some examples of activation energy?
For example, activation energy is needed to start a car engine . Turning the key causes a spark that activates the burning of gasoline in the engine. The combustion of gas won’t occur without the spark of energy to begin the reaction.
What is the significance of activation energy?
The activation energy of a particular reaction determines the rate at which it will proceed . The higher the activation energy, the slower the chemical reaction will be.
What is activation energy diagram?
The activation energy for a reaction is illustrated in the potential energy diagram by the height of the hill between the reactants and the products. For this reason, the activation energy of a reaction is sometimes referred to as the activation energy barrier.
Is activation energy positive or negative?
Although the energy changes that result from a reaction can be positive , negative or even zero, before a reaction can occur, an energy barrier must be resolved in both situations. This means the energy for activation is still positive.
What happens as the activation energy increases quizlet?
What happens as the activation energy increases? The kinetic energy of colliding molecules changes .
What is high energy of activation?
High activation energy means high energy required to have a successful collision between the particles, such as combustion . Even though combustion is an exothermic reaction, because of the high activation energy it requires heat. The particle gains enough energy from heat to overcome the barrier of activation energy.
What are the three main points of collision theory?
There are three important parts to collision theory, that reacting substances must collide, that they must collide with enough energy and that they must collide with the correct orientation.
What is energy of activation support your answer by one example?
Activation energy is the amount of energy that needs to be supplied in order for a reaction to proceed . This example problem demonstrates how to determine the activation energy of a reaction from reaction rate constants at different temperatures.
What is the activation energy of a reaction quizlet?
Activation energy is the energy absorbed before it can start a chemical reaction . the diagram in figure 13 shows the amount of energy the reactions starts and how much energy is being released or absorbed depending on the reaction that is occurring.
How is activation energy used quizlet?
Terms in this set (8)
Activation energy is the energy required to break existing bonds, and form new bonds . If a collision occurs with more energy than the activation energy, the reaction will occur.
What happens when activation energy increases?
Higher activation energies decrease the rate of a reaction . That is the main reason catalysts are so important in the chemical industry. Catalysts reduce the activation energy, allowing for more effective and efficient processes.
