Page 28 - ELKM SSI Validasi Kedua Fix_Neat

Harga besaran termodinamika dapat dihitung dalam setiap
proses dan harganya adalah:

Proses 1 : ∆U = q + w 1
1
1
∆U = 0
1
q = ─ w
1
w = ─ PdV

Untuk gas ideal
PV = ─ nRT => P = nRT dV
1
V
V
2
w = ─ nRT ∫ dV
V 1 V

Proses 2 : ∆U = q + w 2
2
2
q = 0
2
∆U = w
2
2
∆U = n CvdT
2
= n Cv (T – T )
2
1

Proses 3 : ∆U = q + w
3
3
3
∆U = 0
3
q = w V 4
3
3
w = ─ PdV ∫ dV
3
V V
3
w = ─ nRT
2

Proses 4 : ∆U = q + w 4
4
4
q = 0
4
∆U = w
4
4
∆U = n CvdT
4
= n Cv (T – T )
2
1

E-LKM SSI Termodinamika Kimia
28