Endothermic and Exothermic Reactions - GRE Subject Test: Chemistry
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Question
When the enthalpy of a reaction has a value of 
, which word is used to describe the reaction?
When the enthalpy of a reaction has a value of
Answer
When the enthalpy of a reaction is negative, it means that heat has been released from the system to the surroundings. This release of energy is referred to as an exothermic reaction.
Endothermic reactions have a net heat flow into the system. Exergonic and endergonic are terms used to describe the change in free energy for a given system.
When the enthalpy of a reaction is negative, it means that heat has been released from the system to the surroundings. This release of energy is referred to as an exothermic reaction.
Endothermic reactions have a net heat flow into the system. Exergonic and endergonic are terms used to describe the change in free energy for a given system.
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