Question

2 Which technique is used for separation of glycerol from soap in soap industry?​

Answer 1

Answer:

Distillation

Explanation:

The distillation technique most suited for separating glycerol from spent-lye in the soap industry is: Fractional distillation.

Answer 2

Answer:

Distillation under reduced Pressure

Explanation:

• In the soap industry, glycerol (B.P. 290°C) is separated from spent lye by distillation under reduced pressure, as simple distillation requires very high temperatures, which may decompose the component.
• Vacuum distillation is a distillation method in which the pressure above the liquid mixture to be distilled is reduced to less than its vapor pressure (usually less than atmospheric pressure), causing the most volatile liquid(s) to evaporate (those with the lowest boiling point).
• Vacuum distillation is the process of distilling under reduced pressure to purify compounds that are difficult to distill at ambient pressures or simply to save time or energy. This method divides compounds based on differences in boiling points.
• Organic compounds can be distilled at lower temperatures because the boiling points of liquids fall when pressure is reduced. This is preferable because using high temperatures for distillation at atmospheric pressure increases distillation time, reduces efficiency, and allows compounds to decompose.

Thus this is the answer.

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