Include the van't Hoff factor for the solution when the factor is given.
π = 0.674 atm for a solution of ethanol (C2H5OH):
Determine the molarity of each of the following solutions from its osmotic pressure at 25°C.?
2019-02-24 10:56 pm
回答 (1)
2019-02-24 11:53 pm
Osomtic pressure, Π = 0.674 atm
van't Hoff factor, i = 1
Gas constant, R = 0.08206 L atm / (mol K)
Temperature, T = (273 + 25) K = 298 K
Π = iMRT
Hence, M = Π/(iRT)
Molarity, M = 0.674 / (1 × 0.08206 × 298) mol/L = 0.0276 mol/L
van't Hoff factor, i = 1
Gas constant, R = 0.08206 L atm / (mol K)
Temperature, T = (273 + 25) K = 298 K
Π = iMRT
Hence, M = Π/(iRT)
Molarity, M = 0.674 / (1 × 0.08206 × 298) mol/L = 0.0276 mol/L
收錄日期: 2021-05-01 22:28:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20190224145637AAXcJrH