QQuestionChemistry
QuestionChemistry
Which layer is aqueous and which is organic (bottom or top)? Will the result be the same if dichloromethane (DCM) is used as the organic solvent? Explain.
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Step 1:I'll solve this problem step by step, focusing on the solvent layer separation and polarity considerations.
Step 2:: Understand Solvent Density and Polarity
- Water is more dense than most organic solvents - The layer separation depends on the densities of the solvents used - Polarity plays a crucial role in determining which substances dissolve in which layer
Step 3:: Typical Layer Separation
- Aqueous (water-based) layer: More dense, typically BOTTOM layer - Organic solvent layer: Less dense, typically TOP layer
Step 4:: Comparing Solvents
\rho_{water} = 1.00 \mathrm{g/mL}
- For chloroform (CHCl₃): - Chloroform is denser, so it will be the BOTTOM layer - Aqueous layer will be TOP
Step 5:: Dichloromethane (DCM) Comparison
- $$\rho_{DCM} = 1.33 \mathrm{g/mL}
- Less dense than chloroform - DCM will still be the BOTTOM layer - Aqueous layer remains TOP layer
Final Answer
- Aqueous layer: TOP layer - Organic layer (chloroform or DCM): BOTTOM layer - The layer separation principle remains consistent between chloroform and DCM
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