CHM 2211L Final Quiz - Davidson

No because they will still have the same signal since they have the same functional group. We could tell if we had NMR

The water flows up the condenser because if the water enters from the bottom, the condenser will always be completely filled with cold water. This ensures maximum cooling.

It is important to soak the cloves because water enters the cloves, extracting the oil, thus allowing more oil to be collected

(Point from origin)/(Point from solvent line)

To figure out which substance are more polar. It is also used for determining different products

It would be closer to the origin, thus having a lower Rf value

We want to have a compact band as much as possible. If we add water, which is polar, it will interfere with the results

least polar compound would elute first. Thus, unreacted ferrocene would elue first because it is nonpolar

It is powder that is used in OTC medicine to relieve pain and reduce migraines

on it's meta position

On it's para/ortho position

Usually, EWG have double bonds while EDG don't (see photo)

Grignards are very sensitive to water and react readily? It makes a carcinogen which is bad (cyclohexane and Mg(OH)Br. It will react readily more to water

It will prevent recrystallization in the funnel, it will occur a lot faster, and the liquid will not build up in a funnel

to remove any insoluble impurities

is a flammable substance that is a viatile hydrocarbon mixture obtained from petroleum, and used as a solvent. It is NONPOLAR

Phenol is more acidic because it's conjugate base is more stable compared to cycloheanol. It is more stable because the double bond structure inside the ring can resonate

If there is a impurities in your substance. It causes less energy to cause the solid phase into the liquid phase and there is less of packing

No. Sand or glass

a drug that can be used as an analgesic (pain reliever) and an antiphyretic (fever reducer)

A solvent that causes impurities and DC soluble at high temperatures, and the DC must be insoluable at cool temperatures while the impurities must be soluable.

during hot gravity filtration

It will cause superheating in one place

1/4 to 1/2 way up the tube

to avoid "bumping" which is caused by superheating.

Mass of desired product/mass of reagents

Cannot be soluble in each other

polar - remember "like dissolves like"

donate (or lose) a proton when placed with an aqueous base

accept a proton when placed with an aqueous acid

strong acids

weak acids

Sodium Bicarbonate

Only Sodium hydroxide

to remove the majority of the dissolved water

to absorb the water that is dissolved in the organic layer to make it more dry

Just to reduce pressure

washing removes unwanted products while extracting is getting a desired product

to expose metal surface by removing magnesium oxide

because the first product would show a ketone (kicks out O-CH3), so in order to obtain the final product, we would need one more equivalence

ligrion, which is a nonpolar solvent, which will dissolve the biphenyl

it absorbs the iodine that may be in the solution that did not react

because it is the less sterically hindered

Nonpolar

a smaller molecule that can be bonded to other identical molecules to form a polymer

part of a polymer which when repeated, would produce the whole polymer chain?

the formation of a polymer where molecules join together by losing molecules like water as a byproduct

long chain molecules are attached to each other through a 2D-3D unit

sample mixture placed in a liquid or gas phase

a solid support that contains an absorbent

travel through the staionary phase more quickly

travel slowly through the stationary phase