My book says that 'A liquid gets heated up when it evaporates'

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The discussion centers on the misconception that a liquid heats up when it evaporates. Participants clarify that evaporation actually cools the liquid, as it requires energy from the surrounding environment. This energy is drawn from the remaining liquid, leading to a decrease in temperature. The consensus emphasizes that evaporation is an endothermic process, contradicting the book's statement. Understanding this principle is crucial for accurate comprehension of thermodynamics.
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Homework Statement



My book says that 'A liquid gets heated up when it evaporates'

Homework Equations





The Attempt at a Solution



I heard the opposite- the liquid cools itself.
Please help
 
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I agree with you. It takes energy to turn a liquid into gas, and this energy has to come from the surrounding environment, including the remaining liquid.
 
Thread 'Confusion regarding a chemical kinetics problem'

Thread 'Confusion regarding a chemical kinetics problem'

TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
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