What is the effect of a catalyst on the enthalpy change of a reaction?
Practice Questions
Q1
What is the effect of a catalyst on the enthalpy change of a reaction?
Increases the enthalpy change
Decreases the enthalpy change
Has no effect on the enthalpy change
Reverses the enthalpy change
Questions & Step-by-Step Solutions
What is the effect of a catalyst on the enthalpy change of a reaction?
Step 1: Understand what a catalyst is. A catalyst is a substance that helps a chemical reaction happen faster.
Step 2: Know that a catalyst does not change the starting materials or the final products of the reaction.
Step 3: Learn about enthalpy change. Enthalpy change is the difference in energy between the reactants and products.
Step 4: Realize that a catalyst lowers the energy barrier for the reaction, making it easier for the reaction to occur.
Step 5: Remember that even though a catalyst speeds up the reaction, it does not change the overall energy difference (enthalpy change) between reactants and products.
Step 6: Conclude that the effect of a catalyst is to speed up the reaction rate without affecting the enthalpy change.
