Orgo Chem Lab Final

It enhances plasma levels of aspirin in the hopes of decreasing pain levels.

7.5mmol x 1mol/1000mmol x 137.14g/1mol = 1.028g 8mmol x 1mol/1000mmol x 149.894g/1mol = 1.199g

OH is an activating, ortho/para directing substituent. The amide group is deactivating meta directing substituent. Combining both effects, the 3 and 5 positions appear to be most favorable. They overlab with the most negativity.

EWG - Withdraws electrons from aromatic ring -Amide in our experiment -Forms + charges on meta positions of ring -Deactivates ring EDG - Adds electrons to the ring -Forms - charges on ortho/para positions -Activates aromatic ring

Not adding the reactant directly, you are forming it int eh solution to then use in another reaction

Chlorophyl B in slightly more polar -B has a -CHO and A has a -CH3, the O makes B slightly more polar

B-carotene is a hydrocarbon and therefore is very nonpolar. Xanthophylls are more polar due to the oxygen they contain

Moderately polar. The partial (-) charge from the oxygens and the partial (+) charge on the carbon are close enough to cancel each other though resonance.

The ink in the pen could move on the plate with the sample, causing errors in data by adding new marks.

Farther up are less polar, than the lower ones

Help vaporize solvent system

Polar

Good separation of the compounds

The nonpolar solvent will move father, faster for the 70:30 and the polar solvent wont move as far, bc 70:30 is more non polar than 50:50.

to test polarity

so that the entire sample enters the column in as compact of a band as possible. that eay you have better separation bt samples

Unreacted ferrocine b/c it is the least polar

because it is polar and it will mess up the solvent system

Silia layer will crack and the separation will happen unevenly

Bottom: to make the silica layer even and level for the separation to occur evenly across the column Top: When the solution splashes into column the sand protects the silica from becoming unlevel.

Repeating units that are the building blocks of a polymer

a group of atoms derived from a monomer and repeats throughout a polymer

When 2 molecules react to form a larger unit while a small molecule, like H2O oir HCl Is eliminated.

Polymer formed by polymers linking together though hydrogen bonds

a molecule that starts the polymerization

The purpose of hot gravity filtration is to remove any insoluble impurities from your sample. It is better to use a stemless funnel because a funnel with a stem is prone to premature recrystallization.

Ligroin is a petroleum derivative, it is a volatile hydrocarbon mixture and is nonpolar.