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3 February, 22:51

Some nighttime partygoers wear glow-inthe-dark necklaces. the necklaces start glowing once they are ""activated"" by snapping the necklace in a way that allows two chemicals to react and emit light in the form of chemiluminescence. is the chemical reaction exergonic or endergonic? explain your answer.

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  1. 4 February, 00:50
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    Exergonic

    Explanation:

    The process is exergonic because it transfer energy from the system to the surrounds in the shape of light. It happens because of the Gibbs free energy (ΔG) which is lower than zero. If the reaction was Endergonic, the Gibbs free energy should be higher than zero. We can calculate it from the GIbbs-Helmholtz equation: ΔG = ΔH - T. ΔS. ΔH is enthalpy, T is the temperature and ΔS is entropy.
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