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dr r d π = 8 A γ π = dr r dw 8

dr r d π = 8 A γ π = dr r dw 8

dr r d π = 8 A γ π = dr r dw 8

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'<br />

Il potenziale chimico µ del componente i nella goccia è quindi:<br />

µ<br />

µ<br />

ma<br />

e<br />

'<br />

i<br />

'<br />

i<br />

µ<br />

2Vi<br />

<strong>γ</strong><br />

= + µ i<br />

r<br />

2Vi<br />

<strong>γ</strong><br />

− µ i =<br />

r<br />

µ<br />

quindi<br />

i<br />

µ<br />

'<br />

i<br />

= µ<br />

=<br />

ln<br />

µ<br />

o<br />

i<br />

p<br />

p<br />

0<br />

o<br />

i<br />

'<br />

i<br />

i<br />

=<br />

⎛ ∂G<br />

⎞<br />

⎜⎜<br />

n ⎟⎟<br />

⎝ ∂ i ⎠<br />

o<br />

+ RT ln p pi<br />

+<br />

=<br />

RTln<br />

2V<br />

<strong>γ</strong><br />

r<br />

RT<br />

p<br />

i<br />

T,<br />

p,<br />

n j<br />

Tensione di vapore<br />

superficie piana<br />

Tensione di vapore<br />

superficie curvata<br />

Eq. di Kelvin<br />

59

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