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If the enthalpy of reaction is -100 kJ, what can be said about the reaction?
Practice Questions
Q1
If the enthalpy of reaction is -100 kJ, what can be said about the reaction?
It absorbs heat
It releases heat
It is at equilibrium
It requires energy input
Questions & Step-by-Step Solutions
If the enthalpy of reaction is -100 kJ, what can be said about the reaction?
Steps
Concepts
Step 1: Understand what enthalpy of reaction means. It is the heat content change during a chemical reaction.
Step 2: Look at the value of the enthalpy change. In this case, it is -100 kJ.
Step 3: Recognize that a negative value means heat is being released.
Step 4: Conclude that since heat is released, the reaction is exothermic.
Enthalpy of Reaction
– The change in enthalpy (ΔH) during a chemical reaction, indicating whether the reaction absorbs or releases heat.
Exothermic Reactions
– Reactions that release heat to the surroundings, characterized by a negative enthalpy change.
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