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Sumario Principios de termodinámica, entalpia y entropía $3.90   Add to cart

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Sumario Principios de termodinámica, entalpia y entropía

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Se detallan los principios de termodinámica así como el concepto de entalpia, ley de Hess, entropía, energia de Gibbs, espontaneidad y los efectos de la temperatura sobre la entalpia y entropia.

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  • November 4, 2021
  • 2
  • 2021/2022
  • Summary
  • Secondary school
  • Bachillerato
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PRINCIP/05 DE TERMODINÀMICA
La absorcio.no desprendimiento cumbias Sistema y La Sistema
de calor Imp/i c a n en la
energia de / sus alrededores .
energia de un se dezom.ua



energia enterra y
se relacioaa cou et ca /
org trabajo .
Un Sistema solo tiene energia , Qyw son solo manifesta cones de DE .




Energia interna (u ) :
Energia total de / Sistema (Ec y Ep )


calor

Pnimen principio :
DU = Qt We trabajo = Q -

PDV

*
En un Sistema a i s/ado at go haben inter cambro de calor o
trabajo DU =
0 → F- constante .




Energia Calor Trabajo

Sobre et Sistema
Se Positivo
Incorpora positivo





Po - Sistema
Negativo
el
1-bandana
negativo



Function de estado :
Cualquier prop edad /
que tienne un in , co valor cuando el Sistema està de
fin , do . Soto dépende de / estado / gicla '
y fin

g no de Cirno ☐ curries et Proceso .





Fornaci -0m

ENTALP/A Enlace
Ley de Hess
-

+
: -


reacc.in



Recordemos que la
energia interna (Dv ) = 9 + W
=|q-P| →
q =
DU + P .
DV
DV cte
q= DU
-
_




↳ Si . .


Du -1-0 Picte "
.




9,5

Enta /pia (DH ) =
qp
= DU + P -

DV
A
Medica de la
Vca

reaccio.sn/aEp9uim'ca-p.oduc+os-HreactivosEntaIpiadereaccio'
d. de de
ferenc / a /o r




n




(zltg t 502 →
3 CO, + 41-120 DH

=
-
2044 Kj (250 ,
Taton)
(g) (9) (g) (g)


En la reaction se ☒ La entaip.ae Conditions estànclan
'
que - s a ,
nana en

estado t
truie - te et Simba / o
function del
p =
yafzn
Se agrega
1- l'S ico Product o
3f02 t
4/-120 →
Cz Hg ; 502
(g)
DIT
°
= + 2044 Kj
de /
1-= 25°C
°

(g)
'
9) ,g DHO = H
-

(g) → -
2044 [ × ] = 1m
µ,

-
(l ) → ☐ HO = -
2220

DH réactivons ( Hproductos DH > 0 ENDOTÉRMICO

DH react/ vos > DH product os DHLO EXOTÉRMICO




Entalpia entalpia
de
formation
: Var / acion de la correspond ente / a la
formation de 1 moi de sustanc.ae .


;
DH Elemento
Puro
= O


Enta /pia de enlace : Energia necesario para romper un mot de enlaces .




Ley de Hess
Detevnriaaciàn Indirecta DIT

DH es extensive es decir
,


propore/ on a / a /a s cantidades
de Sustanc / a


DIT / nvierte su signo cuando
se envie - te el Proceso


"

S ,
una reaccicinsucede en

etapas ☐ Hneta es '
,
gva '
a la sumotori a de la

entalpia de
Cada etapa
13 div / dual -.

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