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The enthalpy of a chemical reaction is the change of heat during this reaction.
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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 the correct heat of reaction for the composition of two moles of water?
This enthalpy of reaction is 560 joules, for liquid water at 25 oC.
How does the presence of a catalyst affect the enthalpy change of a reaction?
A catalyst does not affect the enthalpy change of a reaction. It speeds up the reaction by providing an alternative pathway with a lower activation energy, allowing the reaction to proceed faster. The overall enthalpy change (ΔH) remains the same with or without a catalyst.
What is the enthalpy of a reaction?
The amount of energy that is used or released as heat in a reaction.
will a catalyst change the enthalpy of a reaction in a chemical reaction?
No, a catalyst will not change reaction enthalpy. If it does so, then it is NOT a catalyst but a reactant in stead!
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 the description of the enthalpy of reaction?
The enthalpy of a chemical reaction is the change of heat during this 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 a correct description of the enthalpy of a reaction?
The enthalpy of a reaction does not depend on the intermediate reactions.
What is the correct heat of reaction for the composition of two moles of water?
This enthalpy of reaction is 560 joules, for liquid water at 25 oC.
What does Hess's law say about the enthalpy of a reaction?
The enthalpy of a reaction does not depend on the reactant path taken.
How does the presence of a catalyst affect the enthalpy change of a reaction?
A catalyst does not affect the enthalpy change of a reaction. It speeds up the reaction by providing an alternative pathway with a lower activation energy, allowing the reaction to proceed faster. The overall enthalpy change (ΔH) remains the same with or without a catalyst.
What is true of the enthalpy reaction?
The enthalpy of a reaction is a measure of the heat energy exchanged with the surroundings at constant pressure. A negative enthalpy change indicates an exothermic reaction, where heat is released. A positive enthalpy change indicates an endothermic reaction, where heat is absorbed.
Which is true of the enthalpy of a reaction?
Its value does not depend on which reactions are added.
How is Hess's law used to measure enthalpy of a desired reaction?
... Intermediate equations with known enthalpies are added together.
What does the enthaply of reaction measure?
The enthalpy of reaction measures the amount of heat absorbed or released during a chemical reaction at constant pressure. It indicates whether a reaction is exothermic (heat is released) or endothermic (heat is absorbed).
If you need to multiply the reaction by 2 to be an intermediate reaction in a hess law problem what would be the final value for the enthalpy of reaction you use for this intermediate reaction?
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