Question

大鯨魚

大一普化5.58求解

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B

9

5.61

 

A mixture of gases contains CH4, Co2Heo, and CHS.
the total pressure 1s 1.50 atm and the numbers of
moles of the gases present are 0.31 mole for CHu,
0.25 mole for CH日c, and 0.29 mole for C3Hs, calcu-
]ate the partial presSures of the gases.

A 2.5-L fask at 15”C contains a miXture of three
gaseS, N2, He, and Ne, at partial preSSureS of 0.32 atm
for N2, 0.15 atm for He, and 0.42 atm for Ne. (a) Cal-
culate the total pressure of the miXxture. (b) Calculate
出e volume in liters at STP occupied by He and Ne 議
the N2 1s removed Selectlvely. NN

Dry air near sea level has the following composition
by volume: N2, 78.08 percent; O,, 20.94 percent; Ar,

0.93 percent; CO,, 0.05 percent. The atmospheric

pressure is 1.00 atm. Calculate (a) the partlal pres-

Sure of each gas in atm and (b) the COohcentratlion Of
each gas in moles per liter at 0。C. (7/7///- Because

Volume is proportional to the huber of moljes

Present, mole fractions of gases can be eXpresSed as

ITatios of volumes at the same temperature and
preSSure.)

A mixture of
ITmHg. If the partial pres-

mmHeg, what is the partial pres-
QT pressure of water at 285C 三

Sure of helium is 368

erature. (1) Whiceh container has the smallest mole

Shi   人

Answer 1

晴天的晴

(a)總壓=所有分壓相加
(b)先知道STP是什麼
然後用原狀態PV=nRT求He.Ne的n
再帶回後來狀態的PV=nRT求V