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First Year Chemistry Experimental Techniques In Chemistry A solid organic compound is soluble in water as well as in chloroform. During its preparation it remains in aqueous layer. Describe a method to obtain from this layer.


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A solid organic compound is soluble in water as well as in chloroform. During its preparation it remains in aqueous layer. Describe a method to obtain from this layer.

Multiple choice questions. Encircle the correct answer.Solvent extraction is an equilibrium process and it is controlled by(a) law of mass action.(b) the amount of solvent used.(c) distribution law.(d) the amount of solute.
Multiple choice questions. Encircle the correct answer.Solvent extraction is an equilibrium process and it is controlled by(a) law of mass action.(b) the amount of solvent used.(c) distribution law.(d) the amount of solute.

Multiple choice questions. Encircle the correct answer.Solvent extraction is an equilibrium process and it is controlled by(a) law of mass action.(b) the amount of solvent used.(c) distribution law.(d) the amount of solute.

Multiple choice questions. Encircle the correct answer.A filtration process could be very time consuming if it were not aided by a gentle suction which is developed:(a) if the paper covers the funnel upto its circumference.(b) if the paper has got small sized pores in it.(c) if the stem of the funnel is large so that it dips into the filtrate.(d) if the paper fits tightly.
Multiple choice questions. Encircle the correct answer.A filtration process could be very time consuming if it were not aided by a gentle suction which is developed:(a) if the paper covers the funnel upto its circumference.(b) if the paper has got small sized pores in it.(c) if the stem of the funnel is large so that it dips into the filtrate.(d) if the paper fits tightly.

Multiple choice questions. Encircle the correct answer.A filtration process could be very time consuming if it were not aided by a gentle suction which is developed:(a) if the paper covers the funnel upto its circumference.(b) if the paper has got small sized pores in it.(c) if the stem of the funnel is large so that it dips into the filtrate.(d) if the paper fits tightly.

Fill in the blanks.A complete chemical characterization of a compound must includeDuring filtration the tip of the stem of the funnel should touch the side of the beaker to avoidAfluted filter paper is used to the process of filtration.A solvent used for crystallization is required to dissolve of the substance at its boiling point and at the room temperature.Repeated solvent extractions using small portions of solvent are than using a single extraction with larger volume of the solvent.
Fill in the blanks.A complete chemical characterization of a compound must includeDuring filtration the tip of the stem of the funnel should touch the side of the beaker to avoidAfluted filter paper is used to the process of filtration.A solvent used for crystallization is required to dissolve of the substance at its boiling point and at the room temperature.Repeated solvent extractions using small portions of solvent are than using a single extraction with larger volume of the solvent.

Fill in the blanks.A complete chemical characterization of a compound must includeDuring filtration the tip of the stem of the funnel should touch the side of the beaker to avoidAfluted filter paper is used to the process of filtration.A solvent used for crystallization is required to dissolve of the substance at its boiling point and at the room temperature.Repeated solvent extractions using small portions of solvent are than using a single extraction with larger volume of the solvent.

A water insoluble organic compound aspirin is prepared by the reaction of salicylic acid with a mixture of acetic acid and acetic anhydride. How will you separate the product from the reaction mixture?
A water insoluble organic compound aspirin is prepared by the reaction of salicylic acid with a mixture of acetic acid and acetic anhydride. How will you separate the product from the reaction mixture?

A water insoluble organic compound aspirin is prepared by the reaction of salicylic acid with a mixture of acetic acid and acetic anhydride. How will you separate the product from the reaction mixture?

Multiple choice questions. Encircle the correct answer.A filtration process could be very time consuming if it were not aided by a gentle suction which is developed:(a) if the paper covers the funnel upto its circumference.(b) if the paper has got small sized pores in it.(c) if the stem of the funnel is large so that it dips into the filtrate.(d) if the paper fits tightly.
Multiple choice questions. Encircle the correct answer.A filtration process could be very time consuming if it were not aided by a gentle suction which is developed:(a) if the paper covers the funnel upto its circumference.(b) if the paper has got small sized pores in it.(c) if the stem of the funnel is large so that it dips into the filtrate.(d) if the paper fits tightly.

Multiple choice questions. Encircle the correct answer.A filtration process could be very time consuming if it were not aided by a gentle suction which is developed:(a) if the paper covers the funnel upto its circumference.(b) if the paper has got small sized pores in it.(c) if the stem of the funnel is large so that it dips into the filtrate.(d) if the paper fits tightly.

The following figure shows a developed chromatogram on paper with five spots.(i) Unknown mixture X(ii) Sample A(iii) Sample B(iv) Sample C(v) Sample DFind out (i) the composition of unknown mixture X(ii) which sample is impure and what is its composition.
The following figure shows a developed chromatogram on paper with five spots.(i) Unknown mixture X(ii) Sample A(iii) Sample B(iv) Sample C(v) Sample DFind out (i) the composition of unknown mixture X(ii) which sample is impure and what is its composition.

The following figure shows a developed chromatogram on paper with five spots.(i) Unknown mixture X(ii) Sample A(iii) Sample B(iv) Sample C(v) Sample DFind out (i) the composition of unknown mixture X(ii) which sample is impure and what is its composition.

A solid organic compound is soluble in water as well as in chloroform. During its preparation it remains in aqueous layer. Describe a method to obtain from this layer.
A solid organic compound is soluble in water as well as in chloroform. During its preparation it remains in aqueous layer. Describe a method to obtain from this layer.
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A solid organic compound is soluble in water as well as in chloroform. During its preparation it remains in aqueous layer. Describe a method to obtain from this layer.

Why is there a need to crystallize the crude product?
Why is there a need to crystallize the crude product?

Why is there a need to crystallize the crude product?

A water insoluble organic compound aspirin is prepared by the reaction of salicylic acid with a mixture of acetic acid and acetic anhydride. How will you separate the product from the reaction mixture?
A water insoluble organic compound aspirin is prepared by the reaction of salicylic acid with a mixture of acetic acid and acetic anhydride. How will you separate the product from the reaction mixture?

A water insoluble organic compound aspirin is prepared by the reaction of salicylic acid with a mixture of acetic acid and acetic anhydride. How will you separate the product from the reaction mixture?

In solvent extraction technique why repeated extractionusing small portions of solvent are more efficient than using a single extraction but larger volume of solvent?
In solvent extraction technique why repeated extractionusing small portions of solvent are more efficient than using a single extraction but larger volume of solvent?

In solvent extraction technique why repeated extractionusing small portions of solvent are more efficient than using a single extraction but larger volume of solvent?

The following figure shows a developed chromatogram on paper with five spots.(i) Unknown mixture X(ii) Sample A(iii) Sample B(iv) Sample C(v) Sample DFind out (i) the composition of unknown mixture X(ii) which sample is impure and what is its composition.
The following figure shows a developed chromatogram on paper with five spots.(i) Unknown mixture X(ii) Sample A(iii) Sample B(iv) Sample C(v) Sample DFind out (i) the composition of unknown mixture X(ii) which sample is impure and what is its composition.

The following figure shows a developed chromatogram on paper with five spots.(i) Unknown mixture X(ii) Sample A(iii) Sample B(iv) Sample C(v) Sample DFind out (i) the composition of unknown mixture X(ii) which sample is impure and what is its composition.

Multiple choice questions. Encircle the correct answer.Solvent extraction is an equilibrium process and it is controlled by(a) law of mass action.(b) the amount of solvent used.(c) distribution law.(d) the amount of solute.
Multiple choice questions. Encircle the correct answer.Solvent extraction is an equilibrium process and it is controlled by(a) law of mass action.(b) the amount of solvent used.(c) distribution law.(d) the amount of solute.

Multiple choice questions. Encircle the correct answer.Solvent extraction is an equilibrium process and it is controlled by(a) law of mass action.(b) the amount of solvent used.(c) distribution law.(d) the amount of solute.

In solvent extraction technique why repeated extractionusing small portions of solvent are more efficient than using a single extraction but larger volume of solvent?
In solvent extraction technique why repeated extractionusing small portions of solvent are more efficient than using a single extraction but larger volume of solvent?

In solvent extraction technique why repeated extractionusing small portions of solvent are more efficient than using a single extraction but larger volume of solvent?

Multiple choice questions. Encircle the correct answer.During the process of crystallization the hot saturated solution:(a) is cooled very slowly to get large sized crystals.(b) is cooled at a moderate rate to get medium sized crystals.(c) is evaporated to get the crystals of the product.(d) is mixed with an immiscible liquid to get the pure crystals of the product.
Multiple choice questions. Encircle the correct answer.During the process of crystallization the hot saturated solution:(a) is cooled very slowly to get large sized crystals.(b) is cooled at a moderate rate to get medium sized crystals.(c) is evaporated to get the crystals of the product.(d) is mixed with an immiscible liquid to get the pure crystals of the product.

Multiple choice questions. Encircle the correct answer.During the process of crystallization the hot saturated solution:(a) is cooled very slowly to get large sized crystals.(b) is cooled at a moderate rate to get medium sized crystals.(c) is evaporated to get the crystals of the product.(d) is mixed with an immiscible liquid to get the pure crystals of the product.

A solid organic compound is soluble in water as well as in chloroform. During its preparation it remains in aqueous layer. Describe a method to obtain from this layer.
A solid organic compound is soluble in water as well as in chloroform. During its preparation it remains in aqueous layer. Describe a method to obtain from this layer.

A solid organic compound is soluble in water as well as in chloroform. During its preparation it remains in aqueous layer. Describe a method to obtain from this layer.

Fill in the blanks.A complete chemical characterization of a compound must includeDuring filtration the tip of the stem of the funnel should touch the side of the beaker to avoidAfluted filter paper is used to the process of filtration.A solvent used for crystallization is required to dissolve of the substance at its boiling point and at the room temperature.Repeated solvent extractions using small portions of solvent are than using a single extraction with larger volume of the solvent.
Fill in the blanks.A complete chemical characterization of a compound must includeDuring filtration the tip of the stem of the funnel should touch the side of the beaker to avoidAfluted filter paper is used to the process of filtration.A solvent used for crystallization is required to dissolve of the substance at its boiling point and at the room temperature.Repeated solvent extractions using small portions of solvent are than using a single extraction with larger volume of the solvent.

Fill in the blanks.A complete chemical characterization of a compound must includeDuring filtration the tip of the stem of the funnel should touch the side of the beaker to avoidAfluted filter paper is used to the process of filtration.A solvent used for crystallization is required to dissolve of the substance at its boiling point and at the room temperature.Repeated solvent extractions using small portions of solvent are than using a single extraction with larger volume of the solvent.

Why is there a need to crystallize the crude product?
Why is there a need to crystallize the crude product?

Why is there a need to crystallize the crude product?

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