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No, a catalyst will not change reaction enthalpy. If it does so, then it is NOT a catalyst but a reactant in stead!

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12y ago

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How does the presence of a catalyst affect the enthalpy change of a reaction?

The presence of a catalyst affect the enthalpy change of a reaction is that catalysts do not alter the enthalpy change of a reaction. Catalysts only change the activation energy which starts the reaction.


What is the description of the enthalpy of a reaction?

The enthalpy of a chemical reaction is the change of heat during this reaction.


What is the description of the enthalpy of reaction?

The enthalpy of a chemical reaction is the change of heat during this reaction.


When does the change in enthalpy equal heat in a chemical reaction?

The change in enthalpy equals the heat in a chemical reaction when the reaction occurs at constant pressure.


How do you calculate the change in enthalpy for a chemical reaction?

To calculate the change in enthalpy for a chemical reaction, subtract the sum of the enthalpies of the reactants from the sum of the enthalpies of the products. This difference represents the change in enthalpy for the reaction.


What is a correct description of the enthalpy of reaction?

The enthalpy of a chemical reaction is the change of heat during this reaction.


What is a correct description of enthalpy of a reaction?

The enthalpy of a chemical reaction is the change of heat during this reaction.


How to calculate the change in enthalpy during a chemical reaction?

To calculate the change in enthalpy during a chemical reaction, subtract the sum of the enthalpies of the reactants from the sum of the enthalpies of the products. This difference represents the change in enthalpy for the reaction.


What undergoes no chemical change during a chemical reaction?

A catalyst undergoes no chemical change during a chemical reaction.


How does catalyst effect chemical change?

A catalyst alters the rate of a chemical reaction.


What does a catalyst not do?

Catalysts do not change the postition of the reaction's equilibrium. Adding a catalyst will increase the rate of reaction, but it will do this by providing another pathway for the reaction to occur acros, meaning a lower activation enthalpy is needed. :)


What is the equation for calculating the change in enthalpy of a system during a chemical reaction?

The equation for calculating the change in enthalpy of a system during a chemical reaction is H H(products) - H(reactants), where H represents the change in enthalpy, H(products) is the enthalpy of the products, and H(reactants) is the enthalpy of the reactants.