If the heat of reaction is negative, the reaction is _____. Select one:
2 answers:
Answer: Option (b) is the correct answer.
Explanation:
A chemical reaction where heat energy is absorbed by the reactant molecules is known as an endothermic reaction.
For example,
The value of = +ve for an endothermic reaction.
In an endothermic reaction, heat being absorbed is utilized to break the bonds. Therefore, temperature of the system decreases.
On the other hand, a chemical reaction in which heat energy is released by the reactant molecules is known as an exothermic reaction.
The value of = -ve for an exothermic reaction.
Thus, we can conclude that if the heat of reaction is negative, the reaction is exothermic.
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