Thermochimie Flashcards

1
Q

G

A

énergie libre

G = Σniµi

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2
Q

Dalton

A

Ptot= Σpi

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3
Q

Temperature de flame

A

^H1 = (Ef - Ei)^rH°

^H2 = int(T0 -> Tf, Cp°dT)

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4
Q

^rG°

A

^rG° = Σuiµi

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5
Q

^rG°(T)

A

^rG°(T) = ^rH°(T) -T x ^rS°(T)

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6
Q

Loi de Kirchoff

A

d^rH°/dT = ^rCp°

d^rS°/dT = ^rCp°/T

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7
Q

Gibbs - Helmhotz

A

d^rG°/dT = - ^rS°

d(^rG°/T)/dT = -^rH°/T2

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8
Q

Loi de Hess

A

^rY°(T) = Σ ui x ^fYi°(T)

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9
Q

Loi d’action des masses

A

^rG = ^rG° + RTln(Q)

a l’équilibre ^rG = 0

^rG° + RTln(K) = 0

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10
Q

Relation de Van’t Hoff

A

d(Ln(k))/dT = ^rH°/RT2

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11
Q

Loi de modération

A

Le système physico-chimiqued s’oppose à aux perturbations

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12
Q

Loi de Van’t Hoff

A

Lorsque T augmente l’équilibre se déplace dans le sens endothermique

^rH° >0 endothermique

^rH° < 0 exothermique

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13
Q

Loi de Le Chatelier

A

a une augmentation de pression l’équilibre se déplace dans le sens d’une diminution du nombre de mole gazeuses

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14
Q

Règle de Gibbs

A

v = 2 + n - r - þ - p

n = nombre de constituants

r = nombre de réactions

Þ (phi) = nombre de phases

p = relation particulières

v = 1 -> monovariant : un seul paramètre intensif

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