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- For liquid water list all IMFs that have to be broken for it to mix with acetoneA lower and/or broader melting point range for a compound after recrystallization most likely results from ________. insoluble impurities such as dust or lint the material still being wet with the recrystallization solvent the compound decomposing in the heated solvent the compound undergoing a chemical reaction with the solventtrue or false A desirable solvent should be highly pure, commercially available, low viscosity and low reactivity.
- In a well plate dissolve benzophenone and benzioc acid in a small amount of ethyl acetate. Then use a capillary tube to spot sample onto pencil line. Add to developing chamber 1.5 mL Hexens, 3.5 mL ethyl acetate. Use UV lamp and circle spot.The following conditions may not cause tailing EXCEPT a. Volatile solvent b.Uncovered chamber c.Thick filter paper as the stationary phase d.Heavy sample spottingDATA Note: Use the videos as references except when data is provided here. Table 1. Selection of Recrystallizing Solvent. Solvents Dissolution at room temperature? (+ or −) Dissolution at elevated temperature? (+ or −) Distilled water - - Acetone + n/a 95% ethanol - + Toluene + n/a Solid sample: Naphthalene Table 2. Mass Measurements. Mass, g Sample solid 0.5021 Empty watch glass 35.7602 Watch glass with recrystallized sample 36.2485 Table 3. Melting Point Determination. Temperature, oC Appearance of Sample in Capillary Tube … Solid 78.4 Solid 79.3 Solid with signs of liquid 79.9 Solid, liquid 80.6 Liquid, solid 81.3 Liquid with signs of solid … Liquid Theoretical Melting Point, oC: 80.2°C (176.4°F) QUESTIONS Which solvent should be used as the recrystallizing solvent? Check if your chosen solvent satisfies all characteristics of a good…
- Please don't provide handwrittin sollution...While performing the formula of hydrate laboratory experiment, the lid accidently slips over the crucible to completely seal the crucible. Whould your calculated percentage water of hydration be high low or unaffected? explain your answerYou have an impurity that is SOLUBLE in hot and cold water. A hot filtration is required. True False
- You have completed your recrystallization process, but you did not get any crystals back after you cooled your solvent. Troubleshoot this situation. Briefly describe reasons why your crystals did not form, and describe how you will get them back.When is it necessary to insulate the three way adapter and fractionating column? Group of answer choices When distilling low boiling liquids When distilling high boiling liquids When the temperature in the lab is excessively warm When the distillate has a bad smellWhat are the most important safety precaution for handling dimethyl ether in small amounts? Group of answer choices Use secondary containment and dispose of in inorganic waste. Dispose of in inorganic waste and use proper ventilation. Use secondary containment and use proper ventilation. Do not work around open flames and use proper ventilation
