Separation of Organic Compounds and Natural Extracts
Given below are two statements:
Statement I : A mixture of (sugar) and can be separated by dissolving sugar in alcohol, due to differential solubility.
Statement II : Rose essence from rose petals is seperated by steam distillation due to its high volatility and insolubility in .
In the light of the above statements, choose the correct answer from the options given below:
Options
Both Statement I and Statement II are true
Both Statement I and Statement II are false
Statement I is true but Statement II is false
Statement I is false but Statement II is true
Topics & Concepts
Step-by-Step Solution
To determine the correctness of the given statements, let us analyze them individually:
-
Analysis of Statement I:
- Sugar () is a polar covalent organic compound that dissolves in alcohol (ethanol) due to favorable hydrogen bonding interactions.
- Sodium chloride () is an ionic solid with high lattice energy that is virtually insoluble in alcohol.
- Because of this differential solubility, adding ethanol to a mixture of sugar and salt dissolves the sugar completely while leaving as an undissolved residue, which can be easily filtered off.
- Thus, Statement I is true.
-
Analysis of Statement II:
- Steam distillation is a separation technique used for purifying liquids that are steam-volatile (have high vapor pressure at temperatures near the boiling point of water) and immiscible/insoluble in water.
- Rose essence (essential oil from rose petals) contains organic compounds that are volatile in steam and insoluble in water, allowing them to be carried over with steam and condensed separately.
- Thus, Statement II is true.
Therefore, both Statement I and Statement II are true.
Correct Answer: A (Both Statement I and Statement II are true)