entslpia y segundo principio de la termodinamica Flashcards

1
Q

reacción espontanea

A

una reaccion que si ocurre en determinadas condiciones

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2
Q

favorecedor de reaccciones espontáneas

A

caracter exotermico

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3
Q

Entropia

A
La entropia (S)  es una medida del grado de dispersion de la energia en un sist. entre las diferentes posibilidades en que ese sistema puede contener energia
↑dispersion y calentaniento, ↑entropia
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4
Q

Segundo principio termodinamica

A

dS = (dif. Qrev)/T

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5
Q

¿∆S en adiabaticos?

A

Q=0

∆S sist≥ 0 si es 0 es reversible sino irreversibe

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6
Q

criterio de espontaniedad

A

∆S univ≥ 0

∆S univ = ∆sisr + ∆Sm.a

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