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One of the substances (ethylene glycol) appeared to increase in temperature as it evaporated (Change in...

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Chemistry


One of the substances (ethylene glycol) appeared to increase intemperature as it evaporated (Change in temperature uponcomplete evaporation: +1.4). How can this be the case?What alteration to the experiment could have been done to test andsee if this evaporation could be exothermic or did that liquid evenevaporate at all?

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4.4 Ratings (860 Votes)
Ethylene glycol has a strong network of hydrogen bonds and also non specific interactions which all need to be overcome during evaporation This means that ethylene glycol will absorb heat from surrounding and evaporate which means that the temperature of the system will reduce due to endothermic nature of    See Answer
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