Which statement defines the activation energy, $$$E_{\mathrm{a}}$$$, for a reaction?

It is the minimum energy that colliding particles must have to react.

It is the minimum energy that endothermic reactions take in from their surroundings.

It is the maximum energy that exothermic reactions transfer to their surroundings.

It is the maximum energy released when the bonds in the products of a reaction form.

Chemistry

IGCSE&ALevel

CAIE

Exam No：0620_m24_qp_22 Year：2024 Question No：14

Answer:

Knowledge points:

5.1.1. State that an exothermic reaction transfers thermal energy to the surroundings leading to an increase in the temperature of the surroundings

5.1.2. State that an endothermic reaction takes in thermal energy from the surroundings leading to a decrease in the temperature of the surroundings

5.1.3. Interpret reaction pathway diagrams showing exothermic and endothermic reactions

5.1.4. State that the transfer of thermal energy during a reaction is called the enthalpy change

5.1.5. Define activation energy

5.1.6.1. reactants

5.1.6.2. products

5.1.6.3. enthalpy change of the reaction

5.1.6.4. activation energy

5.1.7. State that bond breaking is an endothermic process and bond making is an exothermic process and explain the enthalpy change of a reaction in terms of bond breaking and bond making

Which statement defines the activation energy, $$\(E_{\mathrm{a}}\)$$, for a reaction?

Answer:

Knowledge points:

Solution:

Which statement defines the activation energy, $$\(E_{\mathrm{a}}\)$$, for a reaction?

Answer:

Knowledge points:

Solution:

Related Question