ch 243 191 - old-book.ru.ac.th
TRANSCRIPT
CH 243 1 9 1
STROKE 3.ISlOTHERMAL COMPRESSION
t
I!9YORK
1STROKE 4:ADIABATIC COMPRESSION
(-4
1 9 2 CH 243
w, = - $Pd”
“*nRT
= -“I
1 + dV
w =2 AE
CH 243 1 9 3
-w,-w,=
qh. . . . . . . . . . . . . . . (7.9)
-w,-w,=
qh
-w,-w3=
-W,
1 9 4 CH 243
“2 “4nRT,,ln 7 + nRTcln vI 3= . . . . . . . . . . . . ..(7.1 1)
“2nRT,,ln 7I
:. ..,. . . . . . . . . . . (7.12)
. . . . . . . . . . ..(7.14)
“2 3dsti?wFniwwmniosk~ =
nRThln y - nRTclnI “I
nRThln !2
“I
LTh - Tc=
ThI
5mm.m~ (7.9), (7 .10) bbx (7.15) ~~FGGTTNJ~~J~N~“~~~
CH 243
. . . . . . . . . . . . . . . (7.15)
Th-Tc
Th. . . . . . . . . . . . . . (7.16)
1 9 5
q, = -w,
= (1 mol) (8.3143 J/K.mol) (273.15 K) In (mr)
zr 5.2293 kJ
‘bddW V, (44 .8 h)
-qc = w,
7 - nRTcln 41aV3
= - (1 mol) (8.3143 J/K mol) (172.15 K) In (‘$81~~! )
:. -9, = 3.2957 kJ
1 9 6 CH 243
r 5.2293 kJ - 3.2957 kJ
= 1.9336 i%jW
a.4 0
am miFw&:ld T, ,= 120 + 273.15 = 3 9 3 . 1 5 K
Tc = 30 + 273.15 = 303.15 K
LbfiZ w = - 1 0 0 0 3”
mngm - Wyh =
T, - T c
Th
bbYWi1 - ( - 1 0 0 0 J ) = (393.15 - 303.15) K
qh 393.15 K
:. q, =393.15 (1000 J)
P O
=-(-lo00 J)4368.33 J
= 0.229
-CH 243 1 9 7
1 9 8 CH 243
= f.+ . . . . . . . . . . . . . . . (7.18)1
:. AS = + 2dq5
9 rev= -rev
q T . . . . . . . . . . . . . . . (7.19)
CH 243
2 0 0 CH 243
= nRTln 3“I
(xrmwm (5.13))
VA%ysl = nRln-z
“I. . . . . . . . . . . . . ..(7.22)
" 2= nRlnV + 0I
CH 243 201
mnmJnl9 (7.17) ds = dq Ii‘rev
wio dS = dE+y
LihLVlU dE = nCydT LLat P = nRT/V
:. dS = ncdT + “+!!JVT V . . . . . . . . . . . . . . . . (7.26)
:. A ssvst T2 V2= nCvln~ + nRlnF . . . . . . . . . . . . . . (7.27)I I
2 0 2 CH 243
:. A Ssyst = p JznC I n - . . . . . . . . . . . . . .1
CH 243
H,O (l,- 10°C) A ssyst H,O (s, - 10°C)
P ‘Pas, ns3
c; As2‘0
2 0 4
H,O (1 ,OT) H,O (s, O’C)
CH 243
CH 243 205
323.15 323.15
zz n 1 C,~T/T + n 1 C,dT/T273.15 373.15
zz (0.5 mol)(77 J/K.mol] In;=+( .
= (0.5 mo1)(77 J/K.mo1)(0.1681 + (-0.1439)
:. A Ssyst = 0.932 J/K
2 0 6 CH 243
cm 243 207
my SO ~13dXfl~pr S” ll09bMK S”
(J/K.mol) (J/K.mol) (J/K.mol)
C(c,diamond) 2.44 ,CaO (c) 39.1 H&W 69.94
C(c,graphite) 5.69 CaFz (4 68.87 H@,(1) 92.0
B (4 6.53 Casio3 (c) 82.0 C&(l) 124.50
Be Cc) 9.54 CaS04(c,anhydrite) 106.7 Br2(U 152.3
Ca Cc) 41.63 Ca3(PQ4)2(c) 236.1 HNQ,U) 155.60
h%oEmoaJLiua S” ih~O~~OUj S” ?bIlVWlfJWXlBJ S"
(J/K.mol) (J/K.mol) (J/K.mol)
He (g) 126.06 Hz(g) 130.59 H&W 188.72
Ne k) 144.14 N2(g) 191.49 NH,(g) 192.51
Ar (g) 154.72 CO(g) 197.91 CO&g) 213.64
Kr (g) 163.97 Q&g) 205.03 NO,(g) 240.45
Xe W 169.58 I&) 260.58 SO,(g) 248.52
mxk3m&.4ni6 S”
(J/K.mol)
CH,(g) 186.19
C,H,(g) 200.82
C2H4(g) 229.49
CH,QH(g) 231.6
CH,CHQ(g) 265.1
C,&(g) 269.20
208 CH 243
:-AS =
CH 243 2 0 9
T
n A E[+ “ V + s
n ‘p cnig) dT . . . . . . . . . . . . .
Tb Tb T
..(7.37)
aA + bB - C C + dD
2 1 0 CH 243
7C cS&&c) + d&&D) - aS;g,s.~s(A) + bS;98.1S(B)IC 7
CH 243 2 1 1
212 CH 243
CH 243 2 1 3
l
2 1 4 CH 243