Assume that you were performing a distillation of a compound with a boiling point of 197 °C (for example, ethylene glycol, historically the compound used in anti-freeze). How could you save energy on this distillation (hint: think back to the ideal gas equation)?

Assume that you were performing a distillation of a compound with a boiling point of 197 °C (for example, ethylene glycol, historically the compound used in anti-freeze). How could you save energy on this distillation (hint: think back to the ideal gas equation)?

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter4: Energy And Chemical Reactions

Section: Chapter Questions

Problem 64QRT

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Concept explainers

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.

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Assume that you were performing a distillation of a compound with a boiling point of 197 °C (for example, ethylene glycol, historically the compound used in anti-freeze). How could you save energy on this distillation (hint: think back to the ideal gas equation)?

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