How might cyclohexane give a false positive when choosing a solvent for recrystallization?

Explain through a laboratory experiment: How is recrystallization of Acetone possible? Can it or how would it be carried out if yes?

The amount of ethylene resulting from the thermal solution of butane is twice the amount resulting from the thermal solution of ethane true Error Europlastics are prepared from the reaction * of urea with ammonia nitric acid formaldehyde ethylene glycol

2. Is it possible to purify a compound by recrystallization using a mixture of solvents? Why or why not?

Question 4 What is the approximate boiling point of the liquid in the mixture with a lower boiling point? Sample Distillation Data 120 100 80 60 40 20 0 0 0.5 00 1 ● 1.5 2 2.5 3 3.5 ● ● 4 4.5

What is different about steam distillation

Using the solubility information from your table of constants, make a flow chart, showing the procedure you would use to separate 4- chloroaniline from 1,4-dibromobenzene. Indicate what compound is in each solvent by writing the structures at the appropriate locations in the flow chart.   please answer the question, and draw the chart.

Extraction of Caffeine Post-lab 1. What group of organic compounds does caffeine belong to? 2. Draw the structure of caffeine as a line formula. Redraw the structure of caffeine,showing all carbon and hydrogen atoms. 3. What is the molecular formula for caffeine? Use the molecular formula of caffeine tocalculate its molecular weight. 4. What does it mean for two solvents to be immiscible? 5. On the report sheet, you calculated your percent recovery of caffeine. a. If your percent was less than 90%, give at least one reason why it was less. b. A group of students have their percent yield more than 100%, give at least one reasonwhy it was more than 100%. Do NOT simply say “human error.” Be specific about the typesof errors (human or otherwise) that may have occurred, leading to a recovery more than eorequal to 100% (Is this possible Why?)   6. Based on what you observed during this experiment, is dichloromethane denser OR lessdense than water? Explain your reasoning. 7. Based on what…

How would each of the following errors affect the experimental value of your molarity of acetic? Would your Molarity value be too high, too low, or unaffected? Explain your answer. if you titrated your acid sample to a bright pink rather than faint pink endpoint? if your "acetic acid" burette was still wet inside with deionized water when you filled it with acetic acid? if you recorded the final volume of NaOH as "39.88 mL" instead of "38.88 mL"?

When conducting a recrystallization what should generally be true when comparing the compounds melting point compared to the boiling point of the solvent? Explain why this is so.