Classify each process as exothermic or endothermic and indicate the sign of ΔHrxn.
(a) ice melting
(b) a sparkler burning
(c) acetone evaporating from skin
Here, we are going to classify the given processes as exothermic or endothermic.
Reactions in which heat is released along with the formation of products are called exothermic chemical reactions. On the other hand, reactions in which heat is absorbed are called endothermic reactions.
The value of ΔHrxn(enthalpy change, heat evolved or absorbed) is always negative for exothermic reactions and positive for endothermic reactions.
Textbook: Introductory Chemistry
Author: Nivaldo J Tro
This full solution covers the following key subjects: acetone, burning, classify, endothermic, evaporating. This expansive textbook survival guide covers 19 chapters, and 2046 solutions. This textbook survival guide was created for the textbook: Introductory Chemistry, edition: 5. Introductory Chemistry was written by and is associated to the ISBN: 9780321910295. The full step-by-step solution to problem: 70P from chapter: 8 was answered by , our top Chemistry solution expert on 05/06/17, 06:45PM. Since the solution to 70P from 8 chapter was answered, more than 473 students have viewed the full step-by-step answer. The answer to “Classify each process as exothermic or endothermic and indicate the sign of ?Hrxn.(a) ice melting(b) a sparkler burning(c) acetone evaporating from skin” is broken down into a number of easy to follow steps, and 22 words.