What are some examples of how activation energy can be provided to a chemical reaction?

What are some examples of how activation energy can be provided to a chemical reaction?

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 are some examples of activation energy?

What is an activation energy ‘? Explain with example?

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.

Why is activation energy required to start some reactions?

Chemical reactions need a certain amount of energy to begin working. Activation energy is the minimum energy required to cause a reaction to occur. For a reaction to occur, existing bonds must break and new ones form. A reaction will only proceed if the products are more stable than the reactants.

Which of the following best describes the activation energy of a reaction?

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.

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 first order reaction?

Definition of first-order reaction : a chemical reaction in which the rate of reaction is directly proportional to the concentration of the reacting substance — compare order of a reaction.

What is the activation energy GCSE?

Activation energy is the minimum energy required for a reaction to take place between reacting particles. The activation energy required for endothermic reactions is greater than the activation energy required for exothermic reactions.

How do you find the activation energy of a first order reaction?

Activation Energy Problem

1. Step 1: Convert temperatures from degrees Celsius to Kelvin. T = degrees Celsius + 273.15. T1 = 3 + 273.15.
2. Step 2 – Find Ea ln(k2/k1) = Ea/R x (1/T1 – 1/T2)
3. Answer: The activation energy for this reaction is 4.59 x 104 J/mol or 45.9 kJ/mol.

How is activation energy represented on an 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.