Two miscible liquids P (b.p. $349 K$ ) and Q (b.p. $353 K$ ) form an ideal solution. Which method is suitable to separate them?

Afractional distillation
Bsimple distillation
Csteam distillation
Dsublimation

Answer: A

The boiling points differ by only 4 K, so one vapourisation-condensation cycle does not give a clean separation. A fractionating column provides many such cycles, so fractional distillation is used.

Practice Structural Identification and Practical Organic Chemistry More on Purification: distillation, crystallisation, chromatography

Previous questionNext question

More questions on Purification: distillation, crystallisation, chromatography

Column chromatography separates the components of a mixture mainly on the basis of their NEET level
A mixture of 2-nitrophenol and 4-nitrophenol is steam distilled. The distillate contains JEE Main level
Chloroform (b.p. 334 K) is mixed with aniline (b.p. 457 K). The simplest adequate method of separating the two liquids is JEE Main level
The solubility of a solid (g per 100 mL) in four solvents at 25 degC and at the boiling point is: A, 20 and 22; B, 0.5 and 0.6; C, 1.0 and 1... JEE Main level
On a silica gel TLC plate, spots A and B are at 2.4 cm and 4.5 cm from the baseline and the solvent front is at 6.0 cm. The R_f values of A ... JEE Main level
An ether solution contains benzoic acid, phenol, aniline and naphthalene. It is shaken with aqueous NaHCO3. The compound transferred to the ... JEE Main level

Two miscible liquids P (b.p. 349 K) and Q (b.p. 353 K) form an ideal solution. Which method is suitable to separate them?

Answer: A

More questions on Purification: distillation, crystallisation, chromatography

Two miscible liquids P (b.p. $349 K$ ) and Q (b.p. $353 K$ ) form an ideal solution. Which method is suitable to separate them?