InterviewSolution
Saved Bookmarks
| 1. |
Why is impure glycerol by distillation under reduced pressure ? |
| Answer» The boiling point of glycerol is 563 K under normal pressure but it decomposes upon heating below this temperature. Thus, simple distillation cannot be used in this case. Under a reduced pressure of 12 mm Hg, glycerol can be distilled at 453 K without getting decomposed. | |