Final Flashcards by Kennadi Stacy

Q

B car < lyco?

A

Closed rings

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Q

Vitamin B car turn but not lyco?

A

A

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Q

Lyco found?

A

Tomato

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Q

Technique used to evap solvent?

A

Roto evap

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Q

Lyco and B car mix TLC?

A

CH2Cl2/ pet eth

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Q

Lyco or B car polar?

A

Lyco

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Q

Why add sodium carb to extract?

A

Acids stay soluble

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Q

100 mL, H2O, 4 mL dieth, 1 layer, 6 more mL, clear on top?

A

Dieth soluble in H2O some

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Q

Partition coefficient?

A

Or/aq

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Q

Method to pure caffeine?

A

TLC

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Q

Is aq always at bottom of funnel?

A

No density

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Q

Catalyst for aspirin?

A

H2SO4

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Q

Rxn for aspirin?

A

Ester

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Q

First product aspirin?

A

O=|—OH
/O\llO/

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Q

Functional group of the first product of aspirin?

A

Carbox, ester

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Q

Aspirin acid function?

A

Neutral

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Q

Caffeine?

A

Left: \N
Right: IIO
Left low: IIO
Right low: N\

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Q

Is binder soluble org solu?

A

Yes

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Q

Aspirin stomach bleed?

A

Yes

Q

Structure ACE?

A

Top IOH

Q

Silica polar stationary?

A

Yes

Q

Sub endo or exo?

A

Endo needs energy to change

Q

Pressure not reduced?

A

Nothing

Q

Opposite of sub?

A

Deposition

Why sample not melt during sub?

Some compound vap press

Sub

Top in Bottom out Back vac

Role reduced pressure?

Reduce sub point

Phase for vap?

Low—>vap

Vacuum distill use?

Mix at pressure lower

Steam distilled use?

Mix heat sensitive

Head temp?

Temp vapor higher boil mix

Not beer law?

Expo relation

Common absorb for chromatography?

SiO2

Strong interactions in org solv?

Hydrogen bonds

Chromatography?

Separate compounds based on part Mobile and station?

Silica station what low RF on TLC?

High polar

Higher polar use silica absorb CC?

Speed up

Melt lower temp?

Intermolecular first weaker

Eutectic point?

Melting point at min

Pure substance melt pt?

2 degrees Celsius

Recrystal need?

Boil pt higher 60 degrees Celsius

Soluble constant depends?

Solv temp

A=RF=.75 and B=RF=.3?

B absorbs more than A

RF?

Distance station/ distance spot travel

RF is 1?

Compound Dragged/ dieth eth

Increase polar?

Dieth eth —> ethanol

Spots streak TLC?

A lot concentrate