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General, Organic, and Biological Chemistry: Structures of Life | 4th Edition | ISBN: 9780321750891 | Authors: Karen C. Timberlake
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Solution: Classify the following as exothermic or

Chapter 6, Problem 78QP

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QUESTION:

Classify the following as exothermic or endothermic reactions and give ?H for each:a. b. 2Na(s) + Cl2(g) ?2NaCl(s) + 819 kJc. PCl5(g) + 67 kJ ? PCl3(g) + Cl2(g)

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QUESTION:

Classify the following as exothermic or endothermic reactions and give ?H for each:a. b. 2Na(s) + Cl2(g) ?2NaCl(s) + 819 kJc. PCl5(g) + 67 kJ ? PCl3(g) + Cl2(g)

ANSWER:

Problem 78QPStep 1 of 2:Here, we are asked to classify the given reactions as exothermic or endothermic and give H for each.An endothermic reaction is a process or reaction in which the system absorbs energy from its surroundings in the form of heat. An exothermic reaction is a process or reaction that releases energy from the system to its surroundings, in the form of heat, light, electricity or sound. ________________

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