Molar Volume
2012-09-07 4:13 am
50 cm^3 of propane are mixed with 300 cm^3 of oxygen. The mixture is ignited. What is the volume of the resulting gas mixture? (All volumes are measured at room temperature and pressure.)
回答 (1)
2012-09-08 4:50 am
✔ 最佳答案
C3H8(g)+ 5O2(g) → 3CO2(g) + H2O(l)Mole ratio C3H8 : O2 = 1 : 5
For complete ignition of 5 cm³ of C3H8, 250 cm³ of O2is needed.
Hence, O2 is in excess, and C3H8 is thelimiting reactant (completely reacted).
Volume C3H8 left = 0
Volume of O2 left = 300 - 5*50 = 50 cm³
Volume of CO2 formed = 3*50 = 150 cm³
Volume of H2O liquid formed » 0cm³
Volume of resulting gas mixture = 50 + 150 = 200 cm³
參考: 賣女孩的火柴
收錄日期: 2021-04-13 18:58:11
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120906000051KK00547