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Chapter-6 Entropy

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Closed Systems<br />

S<br />

gen<br />

<br />

S<br />

total<br />

S<br />

sys<br />

S<br />

surr<br />

<br />

0<br />

Isolated system boundary<br />

S<br />

2<br />

S<br />

m( s s1)<br />

2<br />

1<br />

Q<br />

T<br />

surr<br />

surr<br />

Q<br />

Ssurr<br />

<br />

T<br />

surr<br />

If process is adiabatic:<br />

Q surr<br />

CLOSED SYSTEM<br />

S sys = m(s 2 -s 1 )<br />

SURROUNDINGS<br />

surr<br />

Q<br />

S<br />

surr<br />

gen<br />

Q<br />

S<br />

sys<br />

tot<br />

0<br />

m(<br />

s<br />

2<br />

<br />

s<br />

1<br />

)<br />

<br />

0

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