English
Karnataka Board PUCPUC Science Class 11

By mistake, an alcohol (boiling point 97°C) was mixed with a hydrocarbon (boiling point 68°C). Suggest a suitable method to separate the two compounds. Explain the reason for your choice. - Chemistry

Advertisements
Advertisements

Question

By mistake, an alcohol (boiling point 97°C) was mixed with a hydrocarbon (boiling point 68°C). Suggest a suitable method to separate the two compounds. Explain the reason for your choice.

Short/Brief Note
Advertisements

Solution

Simple distillation can be used because the two compounds have a difference of more than 20° in their boiling points and both the liquids can be distilled without any decomposition.

shaalaa.com
Purification of Organic Compounds
  Is there an error in this question or solution?
Chapter 12: Organic Chemistry Some Basic Principles and Techniques - Multiple Choice Questions (Type - I) [Page 152]

APPEARS IN

NCERT Exemplar Chemistry [English] Class 11
Chapter 12 Organic Chemistry Some Basic Principles and Techniques
Multiple Choice Questions (Type - I) | Q 48 | Page 152

RELATED QUESTIONS

Explain, why an organic liquid vaporises at a temperature below its boiling point in its steam distillation?


Ortho and para – nitro phenol can be separated by ______.


The purity of an organic compound is determined by ______.


A liquid which decomposes at its boiling point can be purified by ______.


Assertion: \[\begin{array}{cc}
\ce{CH - C = CH - COOH}\\|\phantom{.}\\
\phantom{........}\ce{COOC2H5}\end{array}\]

Reason: The principal functional group gets lowest number followed by double bond (or) triple bond. 


Give a brief description of the principle of column Chromatography.


Explain paper chromatography.


The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is ______.


If a liquid compound decomposes at its boiling point, which method (s) can you choose for its purification. It is known that the compound is stable at low pressure, steam volatile and insoluble in water.


Assertion (A): Components of a mixture of red and blue inks can be separated by distributing the components between stationary and mobile phases in paper chromatography.

Reason (R): The coloured components of inks migrate at different rates because paper selectively retains different components according to the difference in their partition between the two phases.


You have a mixture of three liquids A, B and C. There is a large difference in the boiling points of A and rest of the two liquids i.e., B and C. Boiling point of liquids B and C are quite close. Liquid A boils at a higher temperature than B and C and boiling point of B is lower than C. How will you separate the components of the mixture. Draw a diagram showing set up of the apparatus for the process.


A liquid with high boiling point decomposes on simple distillation but it can be steam distilled for its purification. Explain how is it possible?


A liquid compound (x) can be purified by steam distillation only if it is ______. 


Which statement best explains why organic compounds must be purified?


When is purification of an organic compound usually required?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×