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[ۼ : 2009-04-30 20:52:01 ]
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ȭп ǰ(1ȸ)
1. 1l ǥػ(S.T.P) 1.293g̴. з 720mmHg 1l 1g̾ٸ µ ΰ? (, ü R=62.4l․mmHg/g․mol․K̴.)
PM
RTPM
R 51.45 61.19 91.45 125.21
ش▸ Ŀ T
⼭, P720mmHg
M1.29322.4g/g․mol
R62.4mmHg․l/g․mol․K
1g/l
334.19K
tɣ334.19273
61.19
ǻ
(1) õ Ǯ ʿ ̹Ƿ ȰϿ Ѵ.
(2) ü(R) 62.4mmHg․l/mol․K ̿Ϸ з´ mmHg , Ǵ l , g ȰϿ Ѵ.
2. ȥտ ̶̻ ̻ Ÿ ?
Ѵ.
߷ Ѵ.
ݺѴ.
߷ ݺѴ.
ش▸ PPa․nx
⼭, P
Pa
nx
◉ ̻(Ideal Solution)
(1) ̶̻ ȥռ κ ǰ µ зϿ ǿ ȥչ̴.
(2) ̻ ȭ( µ ) Ͱ .
3. ȭа ȯ Ÿ ̴. ȯۿ 帧 ȣ Ÿ , ̵ ´ ? (, ¿ ǰ ִ.)
ȭаABCDE
AB ABC DEC ACDEB
ش▸ .
AB
DAC EAC
ED DACE
EBC
ǻ
¿ ð (Է) ð (ⷮ) ٴ ʷ Ͽ ָ ȴ.
4. ġ ̿Ͽ (Benzene) 翣(Toluene) ȥվ Ͽ. D Ÿ ?
D 90
翣 10W 10
翣 90F100kg 50
翣 50
ž
ش▸ Ѱ .
FDW WFO
(Benzene)
0.51000.90D(100D)0.1
0.51000.9D0.11000.1D
0.50.1
0.90.1 (0.50.1)100(0.90.1)D
D 100
翣(Toluene) м ִ.
0.51000.1D(100D)0.9
0.51000.1D0.91000.9D
翣 ̿ص D50kg̴.
5. 60lbm 10ft/sec ӵ Ѵ. ־ ?
93.24ftlbf 10.33ftlbf 0.93ftlbf 9.32ftlbf
ش▸EK1m․u2߷ 2gc
⼭, gc32.174lbm․ft/lbf․sec2
m60lbm
u10ft/sec
93.24299
93.24lbf․ft
6. Ϲ(HarberBosch) ϸϾ ռ̴.
N23H2 2NH3
280g N2 64g H2 788K, 300atm ¿ 28 ü Ͽ , ¿ NH3 ?
32 8 10 14
ش▸ (1) N23H2 2NH3 N2H2 13̹Ƿ
(N2)
10mol
(H2)
32mol
(2) N23H2 2NH3 ϴ ϰ ¿ ü 28molε 28̹ N2̹ H2 NH3 Ǿ Ƿ
(10)(323)228
10323228
42228
7mol
(3)
NH32714mol
N21073mol
H2323711mol
1431128mol
7. 760mmHg, µ 293K, Һо 200mmHg ȥձü ִ. ȥձü 100kg , kg Ұ ϰڴ°? (, Henry Ģ p=H H=5.19107atm/̴.)
5.634108kg 5.63107kg
6.87109kg 6.87106kg
P
Hش▸ PH․ ()
P200mmHg ( )atm
0.26316atm
0.5W5.067109(5.560.5W)
0.5W2.8171082.5335109W
W5.634108(kg)
8. dz ° 85, 750mmHg ִ 75̴. 85 H2O ȭ 30.7mmHg̴. 1kg Է Ÿ ? (, պڷ 29kg/kgmole̴.)
ش▸ ̿Ͽ ִµ Pa Ⱦұ ̿ؼ Pa Ѵ.
⼭,
18
2923.025
75023.025
H
0.01965kg․H2O/kg․Dry Air
9. ƿ(Di Ethyl Ether) ῭ (Boiling Point) 307.5ɿ 88.39kcal /kg̴. ó µ ȭ mmHg/Kΰ?
(, 307.5K 760mmHg̸, ̻ü Ģ ǰ ƿ ڷ 74̴.)
18.45mmHg/K 26.46mmHg/K
46.25mmHg/K 135mmHg/K
ش▸dp HP ̿dtRT2
⼭, T307.5K
R1.987kcal/kg․molK
H88.39746540.86kcal/kg․mol
26.4582mmHg/K
10. 12.5 Ȳ 77.5 Ȳ 200kg ȥձ Ͽ 19 Ȳ . 19 Ȳ kgΰ?
2000kg 1000kg 3000kg 1500kg
ش▸ ̿
77.5% H2SO4
200kg12.5% H2SO4
(x200)kg19% H2SO4ȥձxkg
H2SO4
12.5(200)20077.519
12.512.520020077.519․
2000kg
ǻ
Ȳ ߿ ϰ Ǿ ϹǷ Ȳ ҷ ϸ鼭 ðϿ Ѵ.
11. ž CO2 25 NH3 75 ü ȥչ Ǿ NH3 Ϻΰ ŵȴ. ž ȥ ü 37.5 NH3 ó NH3 ŵǾ°?
85 80 60 62.5
NH3 NH337.5%
CO262.5%
(100x)m3NH3 (x m3)CO2 25% NH3 75%
100m3ش▸ ȥչ ü 100m3
ȥչ ó CO225m3, NH375m3̸ CO2 ̹Ƿ CO2
25100(100)62.5
ŵ NH3
ó NH3 60m3
ŵ (%) 100
80%
12. 1lb 14.7PSI, 32 14.7 PSI, 260 ϴ Ż(Ethalpy)ȭ? (, H2O CP 1Btu/lb․, CP 0.47Btu/lb․̴. 14.7PSI 212 ߿ 970.3Btu/lb̴.)
1975.52Btu/lb 1525.3Btu/lb
1374.4Btu/lb 1172.86Btu/lb
Q1Q2Q3ش▸ 32() 212() 212() 260()
(Q1, Q3)m․C․t
῭(Q2)r․m
QtQ1Q2Q3
1Btu/lb․(21232)970.3Btu/lb0.47Btu/lb․(260212)
1172.86Btu/lb
13. 3kg л¿ 200ɿ 1000ɱ , к 0.241kcal/kg․, 0.172kcal/kg․̸ Ż(Enthalpy) ȭ?
413kcal 578.4kcal 735.2kcal 927.8kcal
ش▸ HQpG․Cp․Tkcal
⼭, G3kg
Cp0.241kcal/kg․
T1000200800
H30.241800
578.4kcal
14. ũ̺ ü з з° 4kgf/cm2 Ÿ ִ. ɸ а 756mmHg Ű ִٸ, Ŭ̺ з kgf/cm2 Ÿ ΰ?
5.03kgf/cm2 10kgf/cm2 15.63kgf/cm2 22.5kgf/cm2
ش▸ УУ
У756mmHg ( )kgf/cm2
756mmHg1.0332kgf/cm2760mmHg
1.02776kgf/cm2
У1.027764
5.02776kgf/cm2
15. 17.2g N2O4 100ɷ Ͽ 720mmHg з¿ 11450cm3 Ÿ´ٰ ϰ ȥձü ̻ü Ģ ȴٰ 100ɿ N2O4 NO2 ظ ? (, N2O4 ڷ 92̴)
30.25 58.25 89.53 95.21
ش▸ N2O4
PV
RT Ѹ
PVnRT n
⼭, P720mmHg
T273100373K
V11450cm311.45l
R62.359mmHg․l/mol․K
0.354429mol
Ѹ̹ N2O4 NO2
N2O4 2NO2 Ŀ صǴ N2O4 ϸ
0.187(1)20.187
0.3544290.187(1)0.1872
0.3544290.1870.1870.374
0.895342246 % ϸ
0.895342246100
89.53
16. latm Ÿ ?
е Ϸ
ش▸ l․atm з¡̹Ƿ ․ ̴.
17. ȭ ġ (loglog paper) ۵Ͽ . ̰ Ϲ ?
ش▸ (1) yaxn
loglog
loglog ۵
(2) yabx
b
x ۵
(3) ya
(4) yabx
log
ݴ
18. ü 뷮 Ÿ ִ.
CP=abTcT2
Cp cal/g․mol․K, T K c ?
cal/g․mol cal/g․mol․K
cal/g․mol․(K)2 cal/g․mol․(K)3
ش▸ CpabTcT2 Cp cal/g․mol․K̹Ƿ cT2 cal/mol․K Ǿ Ѵ.
cal/mol․K3
19. ȭ ߿ ִ A мϴ 3000ppm̾. Ÿ?
0.3 3 30 300
ش▸ ppm̶ 鸸̹Ƿ 10000003000100 Ѵ.
0.3%
20. Ģ(phase rule) 2̸, 2() Ǿ ִ ¸ ִ ?
1 2 3 0
ش▸ FC2P
C2
P2
F2222
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