Question

if a substance is heated at a lower temp it decomposes at
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Answer 1

Answer:

As the name vacuum distillation implies, the distillation column is under a vacuum, or significantly less than atmospheric pressure of 760 millimeters of mercury (mmHg). At low pressures, the boiling point of the atmospheric distillation unit’s bottoms is low enough that lighter products can vaporize without cracking, or degrading, the oil.