47)What pressure in atm) will 0.44 moles of Br 2 exert in a 10.2 L container at 25°C?
回答 (2)
2020-04-29 12:09 pm
At 25°C, Br₂ exists as a volatile liquid. Suppose the Br₂ is completely vaporized in the container.
Consider the Br₂ vapor:
Volume, V = 10.2 L
No. of moles, n = 0.44 mol
Gas constant, R = 0.08206 L atm / (mol K)
Temperature, T = (273 + 25) K = 298 K
Gas law: PV = nRT
Then, P = nRT/V
Pressure, P = 0.44 × 0.08206 × 298 / 10.2 = 1.05 atm
Consider the Br₂ vapor:
Volume, V = 10.2 L
No. of moles, n = 0.44 mol
Gas constant, R = 0.08206 L atm / (mol K)
Temperature, T = (273 + 25) K = 298 K
Gas law: PV = nRT
Then, P = nRT/V
Pressure, P = 0.44 × 0.08206 × 298 / 10.2 = 1.05 atm
2020-04-29 12:05 pm
PV=nRT. Substitute and solve for the pressure. Roughly, 1 atm.
收錄日期: 2021-04-18 18:29:10
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20200429035707AAQPT9Q