How can we help?

You can also find more resources in our Help Center.

73 terms

Chem 1330 - J. Smith

STUDY
PLAY
which structural feature is never associated with cis-trans isomerism?
triple bonds
different conformations of a molecule are the result of what?
rotation around C-C bonds
what is the typical size of hydrocarbons found in gasoline?
C5 - C12
What is true about the solubility of alkenes in water?
no alkenes are soluble in water
which vitamin is water insoluble?
Vitamin A
how many constitutional isomers exist for the formula C4H10O
7
how many constitutional isomers are there with the formula C3H6F2
4
what is true when there is a single substituent on cyclohexane
the substituent will prefer to be equitorial
for cyclohexane, which best explains why the twisted boat and the boat differ in stability?
1,4-dipole hydrogen interaction
the common name of 1,2,3-ethantriol
glycerol
the delocalized pi system in benzene is formed by a cyclic overlap of 6 ____ orbitals
p
antiaromatic molecules contain ______ pi electrons
4n
what ether was frequently used as a general anesthetic in the 19th century?
diethyl ether
which reaction of an alkene requires a transition metal catalyst?
hydrogenation
Which element is present in thiols but not in alcohols?
Sulfur
Which alcohols is used as an oxygenate additive in gasoline?
ethanol
1,2-ethanediol is also known as
ethylene glycol
the most common reactions involving aromatics are...
substitution reactions
what type of alcohol is formed by the hydration of 2-butene?
secondary
what is formed by the chlorination of 1-butene?
1,2-dichlorobutane
what is false, regarding fatty acids?
unsaturated fats stimulate cholesterol synthesis in the liver, resulting in an increase in blood cholesterol levels
Teflon is made from monomers which, in addition to carbon, contain which of the following?
fluorine
according to the text, which of the following is NOT part of the "big six" recyclable polymers?
polytetrafluoroethylene
what describes the relationship between these two sugars?
in deoxyribose the oxygen lost is from the hydroxyl on C-2 of ribose
what is the geometry of the carbonyl group of an aldehyde or ketone?
trigonal planar
what products are produced when a carboxylic acid reacts with an alcohol, in the presence of sulfuric acid?
an ester + water
what is true about the spacial distribution of the hydroxyl groups of alpha-D-glucopyranose?
the hydroxyl on C-1 is equitorial, those on C-2,C-3, and C-4 are axial
which type of reaction is used to obtain fatty acids from animal fats?
hydrolysis
what is the least soluble in water?
heptanal
a sample consists of 1 mole of the (+) enantiomer and 3 moles of the (-) enantiomer. what is the optical purity?
50%
what is obtained by the complete hydrolysis of cellulose?
glucose
what is true of a molecule which contains one stereocenter?
it will always be chiral
what is glycogen similar to?
amylopectin
what is the minimum number of oxygen atoms present in an acetal?
2
which carbohydrate derivative forms a gel-like matrix in joints and the vitreous humor of the eye?
hyaluronate
what is the most common form in which polysaccharides are stored in animals?
glycogen
in which class of compounds is the carbon most oxidized?
carboxylic acids
the reaction of which combination of reactants result in the formation of a hemiacetal?
aldehyde and alcohol
what is the structure of cellulose?
unbranched skeleton of glucose molecules joined by 1-->4-beta-glycoside linkages
which sugar is not a reducing sugar?
sucrose
what determines the blood type in humans?
three or four monosaccharides attached to a membrane protein on the surface of red blood cells
what is the correct order of ease of hydrolysis? (most difficult to hydrolyze listed first)
urea, methyl acetate, acetic anhydride, phosgene
starch is produced by ______, and its major function is _________.
plants; energy storage
how many stereocenters are there in L-idopyranose?
5 or more
what is the correct order for ease of hydrolysis? (most difficult to hydrolyze listed first)
amides, esters, anhydrides
what is kevlar?
a polyamide
what has the highest boiling point?
acetic acid
in order to distinguish the R and S forms of a molecule, an enzyme must have binding sites for _______ groups on the stereocenter
3
what is obtained by the complete hydrolysis of starch?
glucose
what is the relationship between the number of stereocenters in a monosaccharaide in its open-chain and ring structures?
the open-chain form contains one less stereocenter than the ring does
how many aldehydes have the formula C5H10O
4
Soaps are...
salts of carboxylic acids that have many carbon atoms in a long hydrocarbon chain
what functional group is found in aldehydes?
CHO
what is TRUE of a molecule which contains two stereocenters?
it MAY be achiral
what will give a positive Tollen's test?
simple aldehydes
what two sugars should be eliminated from ones diet if they have galactosemia?
lactose and galactose
what is the approximate pKa for carboxylic acids?
3-5
what correctly describes the relationship between the dextro/levo system?
all levarotatory compounds rotate plane-polarized light counterclockwise
as soap removes grease from a material, what occurs?
the grease is enclosed within the body of a micelle
what monosaccharide is found in cellulose, starch, and glycogen?
glucose
what products are formed in the complete hydrolysis of phosgene?
CO2, H2O, HCl
what acid is associated with "locker room odor?"
butanoic acid
when wine is exposed to air, it starts to sour. Which compound is responsible for this sour taste?
acetic acid
what is the IUPAC name of sec-butyl ethyl ketone?
4-methyl-3-hexanone
which of the following results in hard water?
Ca2+
how many stereoisomers does C5H11Cl have?
6
the cyclic structures of monosaccharides are what?
hemiacetals
which carbon is the site of reaction when fructose reacts to form fructoside?
C-2
which dicarboxylic acid is found in spinach?
oxalic acid
the configuration at which carbon of an aldohexose determines if the pentose has D or L configuration?
C-5
glycosides are examples of which class of compounds?
acetals
polyethylene terephthalate is an example of a...
polyester
T/F Type A blood contains an additional D-galactose unite, and type B blood contains the monosacharide N-acetyl-D-galactosamine
false