A process for synthesizing ethyl 6-acetoxyhexanoate (Berryflor) (C10H18O4), a commercial raspberry-like fragrance, is based on the chemical reactions below. The numbers below each compound are the molar masses in g mol−1. (1) C6H10O2 ++ C2H6O −→−−−catalyst→catalyst C8H16O3 114.14 46.07 160.21 (2) C8H16O3 ++ C4H6O3 −→−−−catalyst→catalyst C10H18O4 ++ C2H4O2 160.21 102.09 202.25 60.05 What is the percent atom economy (% AE) for the synthesis of C10H18O4 ? Enter an answer accurate to three (3) significant figures. % AE =
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.
A process for synthesizing ethyl 6-acetoxyhexanoate (Berryflor) (C10H18O4), a commercial raspberry-like fragrance, is based on the
(1)
C6H10O2
++
C2H6O
−→−−−catalyst→catalyst
C8H16O3
114.14
46.07
160.21
(2)
C8H16O3
++
C4H6O3
−→−−−catalyst→catalyst
C10H18O4
++
C2H4O2
160.21
102.09
202.25
60.05
What is the percent atom economy (% AE) for the synthesis of C10H18O4 ? Enter an answer accurate to three (3) significant figures.
% AE =
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