. Practical methods of organic chemistry . Fig. Fig. 10. the conical opening is placed a crucible containing the substanceto be sublimed. The plate is covered with a concave glass dish, 16 GENERAL PART the ground edges of which fit the plate tightly. The crucible isheated directly with a small flame, while cold water flows throughthe plate. The vapours condense in part on the glass cover, butmore abundantly on the upper cold surface of the plate in glass cover is not removed until the apparatus is completelycold. Sublimations can also be conducted in crucibles, flasks, beakers
. Practical methods of organic chemistry . Fig. Fig. 10. the conical opening is placed a crucible containing the substanceto be sublimed. The plate is covered with a concave glass dish, 16 GENERAL PART the ground edges of which fit the plate tightly. The crucible isheated directly with a small flame, while cold water flows throughthe plate. The vapours condense in part on the glass cover, butmore abundantly on the upper cold surface of the plate in glass cover is not removed until the apparatus is completelycold. Sublimations can also be conducted in crucibles, flasks, beakers,retorts, tubes, etc. The heating may be done in an air- or order to lead off the vapours rapidly, a current of an indifferentgas is sent through the apparatus. DISTILLATION Kinds and Objects of Distillation. — By distillation is meant theconversion by heat of a solid or liquid substance into a vapour andthe subsequent condensation of this. When distillation is con-ducted at the atmospheric pressure, it is called ordinary distilla-ti
Size: 2188px × 1142px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1900, bookdecade1900, bookpublishernp, bookyear1901
