Clase 03 Flashcards

1
Q

7Ecuación de la energía interna

A

U=Q-Wcv

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2
Q

como se expresa el diferencial U

A

dU= dU/dT dT+ dU/dV dV + dU/dn dn

con la ultima iual a cero cuando son sistemas cerrados puros

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3
Q

Du/dt

A

=Cv capacidad calorifixa molar

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4
Q

Du/dv

A

= T dP/dT -P ) generalmente 0

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5
Q

Cv para gases ideales

A

5/2 R = Cv del puro

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6
Q

Entalpia formula

A

H=U+PV

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7
Q

Dh/dp

A

Dh/dp= v- T dv/dT) Para gases ideales y liq incompresibkes se hace 0

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8
Q

Cp gases ideales

A

Cp=7/2 R

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9
Q

Dh/dt

A

Dh/dt= cp

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10
Q

En que situacion dH = Q

A

Cuando la P interna es constante

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11
Q

Calor latente

A

Calor se cambio se fase a temperatura constante. Entalpia necesaria para producir un cmbio de fase
Lamda v =h og(T,P)-h ol(T,P)

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12
Q

Como calcular lamda a cualquier temperatura

A

Lamda(T)=lamda (Tref) + integral entre t ref y T de (cp beta-cp alfa) dT

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