更新1:
125 oC = 125 Celsius
what will be the total pressure of gas?
2021-02-09 2:45 pm
A mixture of gases is 69.3 percent nitrogen, 14.0 percent oxygen, 10.3 percent fluorine and 6.4 percent carbon dioxide. If 17.3 grams of the gas is added to a 13.2 L chamber at 125 oC. what will be the total pressure of gas?
回答 (1)
2021-02-09 4:28 pm
✔ 最佳答案
Molar mass of N₂ = 14.0×2 = 28.0 g/molMolar mass of O₂ = 16.0×2 = 32.0 g/mol
Molar mass of F₂ = 19.0 × 2 = 38.0 g/mol
Molar mass of CO₂ = 12.0 + 16.0×2 = 44.0 g/mol
Total number of moles of the mixture, n
= 17.3 × [(69.3%/28.0) + (14.0%/32.0) + (10.3%/38.0) + (6.4%/44)] mol
= 0.5759 mol
PV = nRT, then P = nRT/V
Hence, total pressure of the gas mixture
= 0.5759 × 0.08206 × (273 + 125) / 13.2 atm
= 1.42 atm
收錄日期: 2021-04-23 23:07:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20210209064507AAg7bmV