Question

Classify each of the following as exothermic or endothermic: a. A reaction releases $550 \mathrm{~kJ}$. b. The energy level of the products is higher than that of the reactants. c. The metabolism of glucose in the body provides energy.

Name: Problem 35, Chapter 9: Basic Chemistry
Uploaded: 2021-05-14T13:58:58-08:00
Duration: 1 min 11 s
Channel: David Collins
Description: Classify each of the following as exothermic or endothermic: a. A reaction releases 550 kJ. b. The energy level of the products is higher than that of the reactants. c. The metabolism of glucose in the body provides energy.

   Classify each of the following as exothermic or endothermic:
a. A reaction releases $550 \mathrm{~kJ}$.
b. The energy level of the products is higher than that of the reactants.
c. The metabolism of glucose in the body provides energy.

Basic Chemistry

Karen C. Timberlake,… 6th Edition

Chapter 9, Problem 35

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Solved by Expert David Collins

05/14/2021

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A reaction releases $550 \mathrm{~kJ}$. Since energy is being released, this is an exothermic reaction. Show more…

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Classify each of the following as exothermic or endothermic: a. A reaction releases $550 \mathrm{~kJ}$. b. The energy level of the products is higher than that of the reactants. c. The metabolism of glucose in the body provides energy.

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Key Concepts

Enthalpy Change (?H)

Enthalpy change is a measure of the heat absorbed or released during a chemical reaction at constant pressure. It is the key indicator for determining whether a reaction is exothermic (negative ?H) or endothermic (positive ?H), and helps in understanding the energy dynamics of the system.

Endothermic Reaction

This refers to reactions that absorb energy from their surroundings, leading to products that have higher energy than the reactants. Such reactions are characterized by a positive enthalpy change (?H > 0), indicating that energy is taken in during the reaction.

Exothermic Reaction

This concept refers to reactions that release energy, usually in the form of heat, to their surroundings. In these reactions, the energy of the products is lower than that of the reactants, and they typically have a negative enthalpy change (?H < 0).

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