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No, because it is already all around and undere water. BY:Fairy S

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Which of the two layers that are formed during the extraction is dichloromethane?

Dichloromethane typically forms the organic layer during an extraction process, as it is immiscible with water and has a higher density. After shaking the two layers and allowing them to separate, the bottom layer (organic layer) is usually the one containing dichloromethane.


When dichloromethane is mixed with water will the organic phase be in the upper level or lower level?

The organic phase, which contains dichloromethane, will be in the lower level when mixed with water. Dichloromethane is denser than water, so it will settle to the bottom layer due to its higher density.


Is caffeine more miscible in organic layer (dichloromethane) or aqueous layer?

Caffeine is more miscible in the organic layer (dichloromethane) than in the aqueous layer. This is because caffeine is a non-polar compound and thus dissolves better in organic solvents than in water, which is a polar solvent.


Is dichloromethane miscible in water?

Yes, dichloromethane is miscible in water, meaning it can mix and dissolve in water.


What is the solubility of dichloromethane in water?

Dichloromethane is not very soluble in water, with a solubility of about 1.3 grams per 100 milliliters of water at room temperature.


Why did the caffeine leave the water and move into the dichloromethane?

Caffeine is more soluble in dichloromethane than in water due to differences in their polarity. When caffeine is added to the water-dichloromethane mixture, it is preferentially dissolved in dichloromethane, which is a non-polar solvent. This movement is driven by the principle "like dissolves like", where compounds tend to dissolve in solvents with similar polarity.


What substance turns dichloromethane to a violet color?

Bromine water turns dichloromethane to a violet color.


What purpose does a 1 cm layer of anhydrous sodium sulfate in the apex of the funnel serve while transferring the dichloromethane extract into the round-bottom flask?

Anhydrous sodium sulfate is used as a drying agent to remove microscopic amounts of dissolved water in a solvent. It works by chemically reacting with the water by forming its hydrate, which is insoluble preferably in the solvent in this case dichloromethane. This allows one to filter off the crystals containing the water that would otherwise have remained dissolved in the dcm.


Is DCM lighter than water?

No. Dichloromethane is far denser than water will be the bottom of the two layers when the two are mixed.


Explain briefly how you would separate chloroform or dichloromethane extract from an aqueous solution using a separating funnel?

To separate chloroform or dichloromethane extract from an aqueous solution using a separating funnel, you would add the mixture into the funnel and allow the layers to separate based on their densities. Then, carefully drain the lower aqueous layer while keeping the organic layer in the funnel. Finally, collect the organic layer in a separate container and repeat the process if needed for further purification.


How does adding anhydrous sodium sulfate to the dichloromethane solution remove water?

Anhydrous sodium sulfate is a desiccant, meaning it has a strong affinity for water. When added to a dichloromethane solution, the anhydrous sodium sulfate will absorb any water present, effectively removing it from the solution by forming a hydrated salt. The water-free dichloromethane can then be decanted or filtered off for further use.


Why wash dichloromethane solution with a strong base?

Dichloromethane is commonly washed with a strong base, such as sodium hydroxide, to remove acidic impurities like carboxylic acids or phenols that may be present in the organic solution. The strong base reacts with these acidic impurities to form water-soluble salts that can be separated from the organic layer, resulting in a cleaner product.