A. List the liquids in order of increasing vapor pressure  (highest vapor pressure last) from the experiment. _________________< ______________________< ______________________   B. List he liquids in order of increasing vapor pressure (highest vapor pressure last) from the calculated values using the data on the table.   _______________ < ____________________ < _____________________   C. If not, explain why the experiment values differ from the values calculated using the data on the table. Drug Solvent 1 Solvent 2 Solvent 3 Morphine 0.20 0.15 0.10 Cocaine 0.45 0.76 0.73 Reserpine 0.75 0.80 0.72

The phensuprin solid is first dissolved in ethyl acetate. One solid will be left over – what is it?  That solid is collected by gravity filtration. Do we still need the liquid we collect in the flask? What is in it? Next, the ethyl acetate is extracted with 5% aqueous sodium bicarbonate. What will be in each layer? After the extractions, the organic solvent is removed by rotary evaporation. What is the solid that will be collected at this step? What solvent is being removed? We will acidify the bicarb. layer using HCl. How do we know when the aqueous layer has been acidified? A solid forms when the aqueous layer is acidified to pH 2. That solid is collected using vacuum filtration. What is this solid? Create a flow chart depicting the separation of each component of phensuprin as the procedure progresses.

1. How to collect main batch of crystals using vacuum filtration (Set-up, things to remember)• Why use small amounts of cold water for washing? What is being washed away (2things)?2. Why measure the volume of mother liquor in a graduated cylinder?3. How to let the main batch of crystals dry/how will they be stored until next week?4. How to collect the small amount of crystals from step 4 (those that were not subjected tocrystallization)• What can we expect of this small batch of crystals compared to the main batch?

True or False. It is very important to regulate the temperature of the heating mantle so that the distillation occurs at a rate of about 1 drop per 2 seconds.  Explain why?

Imagine your original mixture had contained a component capable of sublimation, such as naphthalene. When would be best time to remove this volatile component so the other procedural steps would still work: before step (1), after (1), after (2), or after (3)? Why? How could the volatile component then be collected as a solid?

a) What percent of X can be extracted with 100 mL hexane?  b) What will be the percent X remaining in water after extraction with four batches of 25 mL hexane?  c) Using 100 mL water sample and portions of 25 mL hexane, determine the minimum number of extractions to obtain an efficiency of approximately 99 % Show solution and explanation.

this experiment is about melting point and boiling point. i need answer in general. like what are the some common errors in these experiments

What should be done if the percent recovery is greater than 100%? Should the recrystallization process be done again? and from start?

Distillation is best done at what speed? a) Very fast to avoid loss of material b) The rate of distillation isn't all that important c) Very slow to get the best separation d) At a moderate speed, but no faster than a degree of equilibrium can be maintained

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.