Saved Bookmarks
| 1. |
72.5 g of phenol is dissolved in 1 kg of solvent (kf=14) depression in freezing point is 7 k find the % of phenol that dimersises |
|
Answer» MB = Taking the solvent as 1 kg Mb = = 150.4 g per mol phenol (molar MASS) — 94 g/mol i = i = 94 / 150.4 = 0.625 We have, 2C6H5OH ↔ (C6H5OH)2 1 0 1- α α/2 Total = 1- α + α/2 i = 1- α/2 0.625 = 1- α/2 α/2 = 0.375 α = 0.375/2 α = 0.75 % of phenol that dimerizes = 75% |
|