Living by Chemistry
2nd Edition
ISBN: 9781464142314
Author: Angelica M. Stacy
Publisher: W. H. Freeman
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Question
Chapter U5.105, Problem 2E
Interpretation Introduction
Interpretation: The reason due to which there is no need to keep sparking a fire once it is started is to be explained.
Concept introduction: Exothermic reaction is the reaction in which a lot of heat is released and energy in this reaction is expressed as negative value. In exothermic reaction, some of potential energy converted to kinetic energy.
Expert Solution & Answer
Answer to Problem 2E
There is no need to keep sparking a fire once it is started because it is an exothermic reaction.
Explanation of Solution
The potential energy between product and reactant is the activation energy. Energy must be supplied to overcome this energy barrier. So, reactions often need a spark to get started. Once an exothermic reaction starts, the reaction itself provides necessary energy for reaction of molecules. Therefore, only single spark is needed to burn the entire forest.
Conclusion
An exothermic reaction needs only one spark.
Chapter U5 Solutions
Living by Chemistry
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