CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317326
A mixture containing the following four compounds is extracted with \({\rm{1M}}\,\,{\rm{HCl}}\). The compound that goes to aqueous layer is:
1 I
2 II
3 III
4 IV
Explanation:
When the given mixture is shaken with \({\rm{1}}\,{\rm{M}}\,\,{\rm{HCl}}\), amine get protonated and becomes cation \(\left( {{\rm{RNH}}_{\rm{2}}^ \oplus } \right)\), which does not dissolve in organic solvent but usually dissolve in \(\mathrm{H}_{2} \mathrm{O}\) due to its charge. So, shaking with aqueous \(\mathrm{HCl}\) will pull amines into the aqueous phase and leave all other compounds in organic layer.
JEE - 2017
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317327
The process of differential extraction is based upon
1 Differential solubilities
2 Differential molecular masses
3 Different boiling points
4 Different chemical properties
Explanation:
Conceptual Questions
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317328
Assertion : A mixture of glucose and m- dinitrobenzene can be separated by shaking it with ether. Reason : Glucose is soluble in water.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Glucose is insoluble in ether as it is nonpolar, but soluble in polar solvent like water. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317329
Which of the following mixtures can be separated by simple distillation?
1 Nitrobenzene and water
2 Nitrobenzene and benzene
3 Ethanol and water
4 HCl and water
Explanation:
A mixture of nitrobenzene (b.pt. 484 K ) and benzene (b.pt. 353 K ) can be separated by simple distillation.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317326
A mixture containing the following four compounds is extracted with \({\rm{1M}}\,\,{\rm{HCl}}\). The compound that goes to aqueous layer is:
1 I
2 II
3 III
4 IV
Explanation:
When the given mixture is shaken with \({\rm{1}}\,{\rm{M}}\,\,{\rm{HCl}}\), amine get protonated and becomes cation \(\left( {{\rm{RNH}}_{\rm{2}}^ \oplus } \right)\), which does not dissolve in organic solvent but usually dissolve in \(\mathrm{H}_{2} \mathrm{O}\) due to its charge. So, shaking with aqueous \(\mathrm{HCl}\) will pull amines into the aqueous phase and leave all other compounds in organic layer.
JEE - 2017
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317327
The process of differential extraction is based upon
1 Differential solubilities
2 Differential molecular masses
3 Different boiling points
4 Different chemical properties
Explanation:
Conceptual Questions
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317328
Assertion : A mixture of glucose and m- dinitrobenzene can be separated by shaking it with ether. Reason : Glucose is soluble in water.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Glucose is insoluble in ether as it is nonpolar, but soluble in polar solvent like water. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317329
Which of the following mixtures can be separated by simple distillation?
1 Nitrobenzene and water
2 Nitrobenzene and benzene
3 Ethanol and water
4 HCl and water
Explanation:
A mixture of nitrobenzene (b.pt. 484 K ) and benzene (b.pt. 353 K ) can be separated by simple distillation.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317326
A mixture containing the following four compounds is extracted with \({\rm{1M}}\,\,{\rm{HCl}}\). The compound that goes to aqueous layer is:
1 I
2 II
3 III
4 IV
Explanation:
When the given mixture is shaken with \({\rm{1}}\,{\rm{M}}\,\,{\rm{HCl}}\), amine get protonated and becomes cation \(\left( {{\rm{RNH}}_{\rm{2}}^ \oplus } \right)\), which does not dissolve in organic solvent but usually dissolve in \(\mathrm{H}_{2} \mathrm{O}\) due to its charge. So, shaking with aqueous \(\mathrm{HCl}\) will pull amines into the aqueous phase and leave all other compounds in organic layer.
JEE - 2017
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317327
The process of differential extraction is based upon
1 Differential solubilities
2 Differential molecular masses
3 Different boiling points
4 Different chemical properties
Explanation:
Conceptual Questions
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317328
Assertion : A mixture of glucose and m- dinitrobenzene can be separated by shaking it with ether. Reason : Glucose is soluble in water.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Glucose is insoluble in ether as it is nonpolar, but soluble in polar solvent like water. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317329
Which of the following mixtures can be separated by simple distillation?
1 Nitrobenzene and water
2 Nitrobenzene and benzene
3 Ethanol and water
4 HCl and water
Explanation:
A mixture of nitrobenzene (b.pt. 484 K ) and benzene (b.pt. 353 K ) can be separated by simple distillation.
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317326
A mixture containing the following four compounds is extracted with \({\rm{1M}}\,\,{\rm{HCl}}\). The compound that goes to aqueous layer is:
1 I
2 II
3 III
4 IV
Explanation:
When the given mixture is shaken with \({\rm{1}}\,{\rm{M}}\,\,{\rm{HCl}}\), amine get protonated and becomes cation \(\left( {{\rm{RNH}}_{\rm{2}}^ \oplus } \right)\), which does not dissolve in organic solvent but usually dissolve in \(\mathrm{H}_{2} \mathrm{O}\) due to its charge. So, shaking with aqueous \(\mathrm{HCl}\) will pull amines into the aqueous phase and leave all other compounds in organic layer.
JEE - 2017
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317327
The process of differential extraction is based upon
1 Differential solubilities
2 Differential molecular masses
3 Different boiling points
4 Different chemical properties
Explanation:
Conceptual Questions
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317328
Assertion : A mixture of glucose and m- dinitrobenzene can be separated by shaking it with ether. Reason : Glucose is soluble in water.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Glucose is insoluble in ether as it is nonpolar, but soluble in polar solvent like water. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317329
Which of the following mixtures can be separated by simple distillation?
1 Nitrobenzene and water
2 Nitrobenzene and benzene
3 Ethanol and water
4 HCl and water
Explanation:
A mixture of nitrobenzene (b.pt. 484 K ) and benzene (b.pt. 353 K ) can be separated by simple distillation.
