Question

Ok #Chemistry people,

At this point I’m desperate, because I can follow all the procedure instructions there is all day, but writing them out is a No??‍♀️ I was following the first answer's flowchart and it didn’t work, I’m pretty sure there are steps missing. Can someone give me a step by step procedure (not another flowchart), pretty please? Help a girl out ??? I am Sample B, and its purefication and extraction and crystallization that we are doing.

"In this experiment you are to create your own personal procedure to separate and purify your assigned mixture. See the assignments of the mixtures below. Look at Exp 1-4 experimental details to help you design to procedures. For this experiment, you will also be required to write a formal report which is worth 100 pts. See details on the formal report below and see the manual for the rest of the experimental details."

Tentative Mixture Assignments:

Sample B (50% Fluorene , 40% o-Toluic Acid, 10% 1,4-dibromobenzene)

Unknown dissolve in minimal organic solvent / Add He if there is base or Add Naoth if there is acid organic centrifuge - extract 2/3 times- purify with Anlayer it 2/3 times Tayer Na₂SO4 Add Naoft for base or HU for acid heut in hot water bath heat for Crystallication Cool dry filter heat supernatant rystallize Add 951 ETOH thot) or Meoth (hot) filter solid, pure neutral 4 yield 4 m.p. m.p. / yield m.p. yield

Answer 1

All 3 compounds Flurene, o-Toluic Acid, 14 dibromo bengene are solids. Toluic Acid can be seperated based upon it's acidic nature. Both Fluorene and 14 dibeomo benzenes are neutral compound 1,4 dibromo benzene is sauble in methand at . room temperature where as Fluorene is very less solubility in methand Ethand at room temperature based on this we can seperate these compounds. sepeeation method Dissave the mixture of compound in minimum amount of dem Caichlolo melhan). Add 10%. NaOH sdution to this eDom. and stire for 10 min. The seperate the aqueous layer. The aqueous layer contain sodium salt o Toulic Acid wash this aqueous layer with DCM to 2 times. @ Alifidify the aqueous layer with dil Hl. we have to cool the aqueous layer during acidification. If solid repeate out filter with the o-toulic acid. If solid is not seperate. exteact with Ethyl acetate solution aistil the solvent through not distilation. Then o-toulic Acid is obtained. The crude o-Toulic acid is Parified by receystalation. The receystalized o-Toulic and is dried and check for melting point & xield. 6 All the Dcm layers are mixed dried over Nason. olganic layer contain both Fluorene and 14 di beomo benzene. Distil the Dem to tobtain the mixture of Fluoren and 1,4 dibeomo benzene. To this add a minimum amount methand 69 Ethand and filter this. The futrate contain 14 diblomo benzene. said is Fluorene.

4 Fluolene is Purified by receystalization in methano u Ethanol. clystals are sepelated through filteration crystals are dried and find melting point and calculate the xield 6 The filterate methand solution contain 1,4 dibromo benzene. Distil methand to obtain crude Iudibromo benzene. Diblomo benzene can be purified by recrystali Zation process. add minimum amount methand by Ethand. 1,4 diblomo benzene is soluble in methanol heat the this solution to troiling at this tempuature add broiled water to methanot deparse cupto tuebridety appears Then stop heating leave the solution for Cooling dibromo benzene Seperate out frifter the crystals and dried it. Finally find melting point and calculate the Kidd.