Which of the following rows identifies the common classification of C₂H4(g) and C₂H4Cl₂(g), and identifies properties that distinguish them from each other? Row A. B. C. D. Common Classification Aliphatic Aliphatic Aromatic Aromatic Property of C₂H4(g) Unsaturated Saturated Unsaturated Saturated Property of C₂H4Cl₂(g) Saturated Unsaturated Saturated Unsaturated
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.
![41. Which of the following statements accurately compares the properties of a 0.10 mol/L
solution of ethanoic acid and a 0.10 mol/L solution of benzoic acid?
A.
The K for the conjugate base of the ethanoic acid solution would be lower than the
K for the conjugate base of the benzoic acid solution.
B.
C.
The pOH of the ethanoic acid solution would be lower than the pOH of the benzoic
acid solution.
The pH of the ethanoic acid solution would be lower than the pH of the benzoic acid
solution.
D. The [H3O*(aq)] of the ethanoic acid solution would be higher than the [H3O* (aq)] of
the benzoic acid solution.
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