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Why can we use a water-ethanol mixture but not a water-hexane mixture as a recrystallization solvent
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- 1. Aspirin could be recrystallized by dissolving in ethanol and adding water. Explain the logic for this procedure.Table 1. Solubility Tests. Functional Group Observations (specify type if any) Sample in concentrated (+/-) H2SO4 Color orange Hydroxyl group Hydroxyl group Hydroxyl group 1-butanol Color orange 2-butanol Color orange diisopropyl ether Look at the structures of compounds tested for solubility in concentrated H2SO4. What generalization can be made for a substance to be soluble in concentrated H2SO4 ?1. Obtain a 50-ml burette, 5-mL volumetric pipette and a pipette bulb from the stockroom. Setting up the burette and preparing the NaOH 2. Rinse the inside of the burette with distilled water. Allow the distilled water to drain out through the tip in order to ensure that the tip is also rinsed. 3. Now rinse the burette with a small amount of NaOH (aq). To do this, add about 5-mL of NaOH (aq) to the burette, then twirl the burette on its side (over the sink) to rinse its entire inner surface. Then allow the NaOH (aq) to drain out through the tip. M Burette Pipette 4. Fill the burette with NaOH (aq) up to the top, between 0-mL and 5-ml. Use a funnel to do this carefully, below eye-level, and preferably over the sink. After this you will need to flush the tip of the burette - your instructor will show you how to do this. Now measure the volume at the level of the NaOH precisely, and record it as the "Initial Burette Reading" on your report. Also record the exact molarity of the NaOH (aq),…
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- A mixture of ethanol, benzaldehyde and KMnO4 is mixed together. Would you expect a precipitate to form based on the reactants functional groups?this is analytical chemistry please show complete solutionAfter dissolving our impure naphthalene in methanol, the solution looks red. What could have happened? a) The impurities are not present anymore b) There are more impurities in the naphthalene c) The impurities have also dissolved in the methanol d) Methanol is normally red
- Answer Bank Record mass.In a mixed solvent system, what is the role of the "poor" solvent? a.to DECREASE the solubility of the solute in the good solvent and saturate the solution b. to INCREASE the solubility of the solute in the good solvent and saturate the solution c. to DECREASE the boiling point of the mixtureWhat is the theory behind recrystallization purifying a solid?