The Question is from neet-chemistry , and it was created by the author P SRAVAN KUMAR

Question

Glycerol can be separated from spent-lye in soap industry by

P SRAVAN KUMAR · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
	**Primary Concept**: Distillation Techniques
	**Related Topics**: Boiling Points, Vacuum Distillation, Separation of Mixtures
	**Prerequisites**: Basic knowledge of distillation and boiling points.
## SOLUTION PATHWAY
**Given Information**:
	*   Glycerol needs to be separated from spent-lye
	*   Spent-lye is a complex mixture
**Method & Steps**:
	1. Identify the key difference: Glycerol has a high boiling point and can decompose at high temperatures.
		Reasoning: Ordinary distillation would require a high temperature, possibly leading to decomposition.
	2. Analyze each option:
		Steam distillation is typically used for volatile compounds.
		Fractional distillation is for separating liquids with different boiling points.
		Distillation under reduced pressure lowers the boiling point, allowing for distillation at lower temperatures.
	3. Select the best option:
		Result: Distillation under reduced pressure is the most suitable for separating glycerol without decomposition.
 ## OPTION ANALYSIS
[A] :x: Steam distillation is not suitable since Glycerol is not sufficiently volatile.
[B] :x: Fractional distillation is not suitable as the boiling point difference is not substantial and Glycerol tends to decompose.
[C] ✓: Distillation under reduced pressure is the most suitable technique because it lowers the boiling point of glycerol, allowing it to be distilled without decomposition.
[D] :x: Ordinary distillation would require too high of a temperature, potentially decomposing the glycerol.
 ## LEARNING AIDS
	**Common Mistakes**:
		1. Thinking any distillation works: Each distillation technique has different applications.
		2. Forgetting about decomposition: High temperatures can cause decomposition.
	**Quick Tips**:
		1. Reduced pressure lowers boiling point.
		2. Consider the volatility and stability of the substances.

P SRAVAN KUMAR · Answer

Steam distillation

P SRAVAN KUMAR · Answer

Fractional distillation

P SRAVAN KUMAR · Answer

The correct Option is "Distillation under reduced pressure"

P SRAVAN KUMAR · Answer

Ordinary distillation

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