chm341q1 - 273.15 K. Find the ratio, p O 2 /p N 2 , of...

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CHM 341/Quiz 1 Quiz 1 (Chs. 0 and 1–1-3), 10 pts Solution 1. (2 pts). A mercury barometer is connected to a container with the gas pressure of 1 bar. Will the height of the mercury column in the same device be higher or lower on the Moon given that the gravitational force is weaker on the Moon? Explain. The height of mercury is 1bar = ρgh . As g is lower on the moon, the height h will be higher. 2. (2 pts). In the diagram below draw the isotherm of a perfect gas at T = 273 K. P 1/V T=373 K T= 273 K 3. (3 pts). 1 mole of nitrogen and 2 moles of oxygen are mixed in a container with the volume of 22.4 L at
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Unformatted text preview: 273.15 K. Find the ratio, p O 2 /p N 2 , of partial pressures of oxygen and nitrogen. p O 2 /p N 2 = n O 2 /n N 2 = 2 4. (3 pts). What is larger: a molar volume of oxygen at 1 atm and 300 K or a molar volume of nitrogen at 2 atm and 400 K? V m ( O 2 ) V m ( N 2 ) = 300K 400K 2atm 1atm = 1 . 5 V m ( O 2 ) > V m ( N 2 ) EQUATIONS: pV = nRT, p = gh. CONSTANTS: R = 8 . 31451 JK-1 mol-1 , g = 9 . 81 m s-2...
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