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Separation (Liquid-Liquid Extraction) Lab
Summary
The aim of this lab was to separate a mixture of aniline, benzoic acid, and 1,4-dimethoxybenzene by the method of extraction. In this experiment, 7 ml of the mixture was used instead of 10 ml. A portion of this mixture was transferred to another flask to facilitate cooling. Afterwards, 3.5 ml of 12 M hydrochloric acid was added gradually to the mixture. A sample was obtained at a melting point of 1250C, and another at 750C. A sample of this mixture was then transferred to a 50 ml volumetric flask. Finally, a crystal was formed and the melting point of the sample was obtained as 62 0C.
A Flowchart Illustrating how to separate a Mixture of …show more content…
Chemical properties are exhibited by a substance in a chemical reaction (changes in chemical reactions). Conversely, a material exhibits physical properties without undergoing any changes in its chemical composition. Different materials have different melting points and thus, they can be identified with ease. Clearly, it was observed that the residue comprised a combination of sodium bicarbonate extracts once the ether had evaporated from the hood.
How to Remove Water that was dissolved in Diethyl Ether Water that was dissolved in diethyl ether can be removed using a commercial drying agent such as MgSO4 salt. The salt dehydrates diethyl ether thus removing all the water.
Why Several Small Extractions are Preferred to One Large Extraction Evidently, performing several small extractions is more efficient than undertaking one large extraction. For effective extraction to be attained, a high surface area of contact would be required between two different solutions. With the former, it is possible to attain a higher surface area of contact with small volumes than in the latter. In addition, several small extractions permit more efficient mixing of two smaller portions than large
Institution
Course:
Instructor
Date of Submission
Separation (Liquid-Liquid Extraction) Lab
Summary
The aim of this lab was to separate a mixture of aniline, benzoic acid, and 1,4-dimethoxybenzene by the method of extraction. In this experiment, 7 ml of the mixture was used instead of 10 ml. A portion of this mixture was transferred to another flask to facilitate cooling. Afterwards, 3.5 ml of 12 M hydrochloric acid was added gradually to the mixture. A sample was obtained at a melting point of 1250C, and another at 750C. A sample of this mixture was then transferred to a 50 ml volumetric flask. Finally, a crystal was formed and the melting point of the sample was obtained as 62 0C.
A Flowchart Illustrating how to separate a Mixture of …show more content…
Chemical properties are exhibited by a substance in a chemical reaction (changes in chemical reactions). Conversely, a material exhibits physical properties without undergoing any changes in its chemical composition. Different materials have different melting points and thus, they can be identified with ease. Clearly, it was observed that the residue comprised a combination of sodium bicarbonate extracts once the ether had evaporated from the hood.
How to Remove Water that was dissolved in Diethyl Ether Water that was dissolved in diethyl ether can be removed using a commercial drying agent such as MgSO4 salt. The salt dehydrates diethyl ether thus removing all the water.
Why Several Small Extractions are Preferred to One Large Extraction Evidently, performing several small extractions is more efficient than undertaking one large extraction. For effective extraction to be attained, a high surface area of contact would be required between two different solutions. With the former, it is possible to attain a higher surface area of contact with small volumes than in the latter. In addition, several small extractions permit more efficient mixing of two smaller portions than large