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The equation for the fermentation of glucose to alcohol and carbon dioxide is $$ \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}(a q) \longrightarrow 2 \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(a q)+2 \mathrm{CO}_{2}(g) $$ The enthalpy change for the reaction is $-67 \mathrm{~kJ}$. Is the reaction exothermic or endothermic? Is energy, in the form of heat, absorbed or evolved as the reaction occurs?

Name: Problem 93, Chapter 6: Chemistry
Uploaded: 2020-04-07T15:38:40-08:00
Duration: 51 s
Channel: Rebecca Wallace
Description: The equation for the fermentation of glucose to alcohol and carbon dioxide is C6 H12 O6(a q) ⟶2 C2 H5 OH(a q)+2 CO2(g) The enthalpy change for the reaction is -67 kJ. Is the reaction exothermic or endothermic? Is energy, in the form of heat, absorbed or evolved as the reaction occurs?

   The equation for the fermentation of glucose to alcohol and carbon dioxide is
$$
\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}(a q) \longrightarrow 2 \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(a q)+2 \mathrm{CO}_{2}(g)
$$
The enthalpy change for the reaction is $-67 \mathrm{~kJ}$. Is the reaction
exothermic or endothermic? Is energy, in the form of heat, absorbed or evolved as the reaction occurs?

Chemistry

Steven S. Zumdahl,… 8th Edition

Chapter 6, Problem 93

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Solved by Expert Rebecca Wallace

04/07/2020

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We are given the enthalpy change for the reaction, which is -67 kJ. Show more…

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The equation for the fermentation of glucose to alcohol and carbon dioxide is $$ \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}(a q) \longrightarrow 2 \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(a q)+2 \mathrm{CO}_{2}(g) $$ The enthalpy change for the reaction is $-67 \mathrm{~kJ}$. Is the reaction exothermic or endothermic? Is energy, in the form of heat, absorbed or evolved as the reaction occurs?

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Key Concepts

Endothermic Reaction

An endothermic reaction is the opposite of an exothermic reaction; it absorbs energy from its surroundings, typically leading to cooling. In these reactions, the enthalpy change is positive, indicating that the reaction requires an input of energy in the form of heat.

Enthalpy Change (?H)

Enthalpy change refers to the heat absorbed or released during a chemical reaction at constant pressure. It is represented by the symbol ?H, where a negative value indicates that the reaction releases heat (exothermic), and a positive value indicates that the reaction absorbs heat (endothermic).

Exothermic Reaction

An exothermic reaction is one in which energy, primarily in the form of heat, is released into the surroundings. This release of heat typically results in the warming of the surrounding environment, and the reaction is characterized by a negative enthalpy change.

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