Chapter 8.2, Problem 3CC

Summary Introduction

To determine: Whether the reaction that occurs in the “glow in the dark necklaces” are exergonic or endergonic.

Introduction: Glow-in-the-dark necklaces glow, when two chemicals, that are separated initially, mix with each other when snapped. This intermixing initiates a chemical reaction in which the necklace glows in the dark. This is a good example of an exergonic reaction because the energy is released in the form of light energy after the reaction.