Organic Chemistry Questions
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Organic Chemistry
Practical DetectionNicholas reveals his aunt's
manipulation when he brings u..
the strawberry jam incident and
concludes, "Oh, Devil, you have
sold yourself!" (Saki 5).
A. Passage #1
B. Passage #2
C. Passage #3
D. Passage #4
Organic Chemistry
BiomoleculesAccording to Hammond's postulate
The more exothermic a reaction step, the earlier the transition state appears in time, and it resembles the
reactants.
The more endothermic a reaction step, the earlier the transition state appears in time, and it resembles
the reactants.
The more exothermic a reaction step, the earlier the transition state appears in time, and it resembles the
products.
The less exothermic a reaction step, the later the transition state appears in time, and it resembles the
reactants.
Organic Chemistry
General organic chemistryWhich description below is accurate about event during the initiation step for free-radical
halogenation of alkanes?
During the initiation step, the C-H bond in some alkane molecules is broken heterolitically, resulting from
exposing the mixture of the reactants to light.
During the initiation step, the bond in some halogen molecules is broken homolitically, resulting from
exposing the mixture of the reactants to light.
During the initiation step, the bond in some halogen molecules is broken heterolytically, resulting from
exposing the mixture of the reactants to light.
During the initiation step, the C-H bond in some alkane molecules is broken homolitically, resulting from
exposing the mixture of the reactants to light.
Organic Chemistry
Practical DetectionIn the chunked method, you ca 6
sometimes put a bit of evidence
into your explanation. Which is an
example of explanation that
contains a bit of evidence?
A. The only winner, it seems, are the wolves,
who work in unison...
B. The men fight over a land "where the trees
can't even stand upright in a breath of wind"
(Saki 5)...
C. In this story, everything is ironic.
Organic Chemistry
General organic chemistryWhich evidence belongs in body.
paragraph #2?
A. Ironically, Nicholas finds that "the older,
wiser, and better people" were always in error
(Saki 1).
B. A humorous tone is apparent with words like
"seemingly frivolous" & "quite uninteresting"
(Saki 2).
C. Saki uses imagery when a tapestry is
"glowing in wonderful colors beneath a layer of
dust" (Saki 4).
Organic Chemistry
Halogen DerivativesPredict the product composition for free-radical bromination of pentane by stating
the percentage composition of the three possible products named below:
A. 1-bromopentane
B. R-2-bromopentane
C. S-2-bromopentane
D. 3-bromopentane
Organic Chemistry
General organic chemistryThe specific rotation of enantiomer A is 7.9º.
A mixture of enantiomer A and A'(the enantiomer of A) is subjected to polarimetry
and an observed rotation of 2.1° is obtained, what is the %Composition for this
mixture?
63.3% A' and 36.7% A
63.3% A and 36.7% A'
50% A and 50% A'
30% A' and 70% A
Organic Chemistry
General organic chemistry10
Nicholas' aunt calls out to him in
desperation, "I've been looking
for you in the gooseberry garde
and I've slipped into the rain-
water tank ... the sides are
slippery and I can't get out" in
hopes of procuring his assistance
(Saki 4).
A. Passage #1
B. Passage #2
C. Passage #3
D. Passage #4
Organic Chemistry
Chemistry in Daily LifeWhich of the following lists the relative strengths of the fundamental forces
from strongest to weakest?
A. Strong nuclear force, weak nuclear force, gravitational force,
electrostatic force
B. Gravitational force, strong nuclear force, electrostatic force, weak
nuclear force
C. Electrostatic force, gravitational force, weak nuclear force, strong
nuclear force
D. Strong nuclear force, electrostatic force, weak nuclear force,
gravitational force
Organic Chemistry
Practical DetectionFrom the topic sentence in the 5
sample paragraph, Saki's use or
which literary device or technique
is being addressed?
A. characterization
B. irony
C. dialogue
Organic Chemistry
Practical DetectionUsing the alternating method, 7
where does the following
explanation belong in the outline
of Body Paragraph 2?
The wolves symbolize both the
power of nature and its disregard
for men or their concerns.
A. Explanation 1
B. Explanation 2
C. Explanation 3
Organic Chemistry
General organic chemistryWhat is one advantage of using fossil fuels?
A. They are more reliable than other sources of energy.
B. They produce fewer pollutants than other fuels.
C. There is an unlimited supply of fossil fuels.
D. They are relatively inexpensive.
Organic Chemistry
Practical DetectionFrom the sample conclusion
paragraph, which passage is a
Paraphrase of the text/story?
A. In "The Lady, or the Tiger" Stockton
B. The story is about a princess who must
choose whether she would prefer to see her
lover die...
C. It is clear that Stockton uses symbolism
throughout the story; the tiger represents
jealousy...
D. Stockton...thematically suggests that love
never ends well no matter what the
circumstances
Organic Chemistry
General organic chemistryWhich of the following DNA duplex will melt at higher temperature?
A) GGGAAATTT
CCCTTTAAA
B) GGGGGGTTT
CCCGGGAAA
A and B will not melt at all.
A and B will melt at same temperature
A will melt at higher temperature
B will melt at higher temperature
Organic Chemistry
General organic chemistryIf one pure enantiomer rotates the plane-polarized light 117.6° in the clockwise
direction, then a pure sample of its
non-superimposable
mirror image will rotate it
-117.6
-62.4
62,4
117.6
Organic Chemistry
General organic chemistryThe specific rotation of enantiomer A is -87.3º.
A mixture of enantiomer A and A'(the enantiomer of A) is subjected to polarimetry
and an observed rotation of 34.2° is obtained, what is the %EE for this mixture?
39.2% A
60.8% A
39.2% A'
60.8% A
Organic Chemistry
BiomoleculesCalculate the number of oxygen atoms in a 120.0 g sample of forsterite (Mg2SiO4).
Be sure your answer has a unit symbol if necessary, and round it to 4 significant digits.
Organic Chemistry
General organic chemistryA dextrorotatory enantiomer
Is also of R configuration.
Is also of S configuration.
Rotates the propagation plane of polarized light in clockwise fashion.
Is also of- configuration.
Organic Chemistry
General organic chemistrySelect the correct answer.
How does a catalyst speed up a chemical reaction?
A. by lowering the activation energy
B. by lowering the AH of the reaction
C. by raising the energy of the products
D. by raising the energy of the reactants
Organic Chemistry
General organic chemistryQuestion 8 of 25
What can be said about a reaction with AH= 620 kJ/mol and AS = -0.46
kJ/(mol-K)?
A. It is never spontaneous.
B. It is always spontaneous.
C. It is spontaneous above 1347 K.
D. It is spontaneous at 298 K.
Organic Chemistry
General organic chemistryWhat information does the latent heat of vaporization give?
A. The energy needed to completely vaporize a mole of a liquid
B. The energy needed to heat a liquid from freezing point to boiling
point
C. The energy needed to raise the temperature of 1 g of a vapor 1°C
D. The energy needed to completely melt a mole of a solid
Organic Chemistry
Practical DetectionAccording to the following balanced chemical reaction:
2 Cr(s) + 2 H3PO4 (aq) + 3 H₂ (g) + 2 CrPO4
-
What mass (in grams) of H₂ Las is produced when 48.3 grams of phosphoric acid
are reacted with excess chromium?
Organic Chemistry
General organic chemistryWhat makes ocean breezes blow toward land by day?
A. The ocean water has more currents in it.
B. The ocean warms more slowly than the land.
C. The ocean warms more quickly than the land.
D. The ocean waves create the breezes.
Organic Chemistry
General organic chemistryA rocket is designed to drop its first stage mid-flight. Due to a malfunction,
this does not occur. What is a possible result of this malfunction?
A. The rocket is now too heavy to reach its destination.
B. Rocket stages will drop.
C. Thrust will increase.
D. The specific impulse will increase.
Organic Chemistry
HydrocarbonsHow many grams of lead(II) chloride is produced if 13.87 g lead(II) nitrate combines with excess hydrochloric acid to produce lead(II)
chloride and nitric acid?
Pb(NO3)2 + HCI -> PbCl2 + HNO3 [unbalanced]
11.64 g
14.33 g
0.086 g
16.52 g
5.82 g
Organic Chemistry
Practical DetectionWhich statement is true about how scientists draw conclusions from data?
A. Scientists do not allow others to make conclusions about their
data.
B. Two scientists may have different underlying assumptions that
lead them to different conclusions about the same data.
C. Any two scientists will always come to the same conclusion about
a data set.
D. Teams of scientists never share their data to help other teams
draw conclusions.
Organic Chemistry
General organic chemistryWhy do your feet burn when you walk across beach sand on a sunny summer
day?
A. Heat is transferred by radiation warming.
B. Heat is transferred by frictional heating.
C. Heat is transferred by thermal conduction.
D. Heat is transferred by convection heating.
Organic Chemistry
General organic chemistryTwo scientists come to different conclusions about an experiment. What
should be done to settle their disagreement?
A. One of the scientists should change his or her conclusion.
B. They should have a debate.
C. More experiments should be performed.
D. People should assume the older scientist is correct.
Organic Chemistry
General organic chemistryWhich of the following is a primary source?
A. An encyclopedia entry
B. A scientific paper
C. A magazine article
D. A news report on the Internet
Organic Chemistry
General organic chemistryThe combustion reactions that occur in the engines of a rocket lead to
pressure gradients that cause the gaseous products to rush out of the rocket
into the atmosphere. What is created by this process?
A. Thermodynamics
B. Fuel efficiency
C. Thrust
D. Decreasing entropy
Organic Chemistry
General organic chemistryHow does a scientist critique another scientist's conclusions?
A. By ignoring the first scientist's data
B. By performing more experiments
C. By criticizing the scientist's personal beliefs
D. By reading secondary sources
Organic Chemistry
General organic chemistryYou read a primary source and a secondary source that discuss the same
experiment. There is a difference in the conclusions made by these two
sources. Which should you trust more, and why?
A. The primary source, because it was written by the researcher
B. The primary source, because it contains more charts
C. The secondary source, because it is easier to understand
D. The secondary source, because it was printed on paper
Organic Chemistry
General organic chemistryPeople breathe in oxygen molecules from the air and exhale carbon dioxide
molecules. Because of this, the air is full of carbon dioxide and oxygen mixed
together. What is this an example of?
A. An increase in entropy
B. An increase in oxidation reactions
C. An increase in enthalpy
D. An increase in evaporation
Organic Chemistry
Practical DetectionHow does the phase of water affect its specific heat capacity?
A. Water vapor has the highest specific heat capacity.
B. All phases have the same specific heat capacity.
C. Frozen water has the highest specific heat capacity.
D. Liquid water has the highest specific heat capacity.
Organic Chemistry
General organic chemistryFor which of the reactions listed below will Gibbs free energy always be
positive?
A. An endothermic reaction that increases in entropy
B. An exothermic reaction that decreases in entropy
C. An exothermic reaction that increases in entropy
D. An endothermic reaction that decreases in entropy
Organic Chemistry
Chemistry in Daily LifeWhich statement describes the potential energy diagram of an exothermic
reaction?
A. The potential energy of the products is greater than the potential
energy of the reactants.
B. The activation energy of the reactants is greater than the
activation energy of the products.
C. The potential energy of the reactants is greater than the potential
energy of the products.
D. The potential energy of the products is equal to the potential
energy of the reactants.
Organic Chemistry
General organic chemistryA chemist must prepare 500. mL of 445. mM aqueous aluminum sulfate
(Al₂(SO4)₂) working solution. He'll do this by pouring out some 0.975 M aqueous
aluminum sulfate stock solution into a graduated cylinder and diluting it with distilled water.
Calculate the volume in mL of the aluminum sulfate stock solution that the chemist should pour out. Be sure your answer has the correct number of
significant digits.
?
Organic Chemistry
General organic chemistryWhat causes radiation heating?
A. Heat transfer through electromagnetic waves
B. Heat transfer through differences in temperatures
C. Heat transfer through moving gases or liquids
D. Heat transfer through contact between molecules
Organic Chemistry
Basic PhysicsWhat volume (in L) of ethane (C₂H6) will be required to produce 42.5L of
carbon dioxide in the reaction below?
2C₂H6(g) +702(g) → 4CO2(g) + 6H₂O(g)
Organic Chemistry
General organic chemistryIdentify the components of the ionic formula based on the name nickel(III) sulfide.
What is the symbol for the element that forms the positive cation?__
What is the symbol for the element that forms the negative anion?__
What is the subscript on the cation in the neutral formula?__
What is the subscript on the anion in the neutral formula?__
Organic Chemistry
General organic chemistryWhich of the following shows that the combustion of methane produces 802 kJ/mol of energy?
A. CH4(g) + 20₂(g) → CO₂(g) + 2H₂O(g) + 802 kJ/mol
B. CH4(g) + 20₂(g) → CO₂(g) + 2H₂O(g) - 802 kJ/mol
C. CH4(g) +202(g) + 802 kJ/mol → CO₂(g) + 2H₂O(g)
D. CH₂(g) +20₂(g) → CO₂(g) + 2H₂O(g)
Organic Chemistry
Practical DetectionCalculate the number of carbon atoms in a 140.0 g sample of camphor (C₁0H160).
Be sure your answer has a unit symbol if necessary, and round it to 4 significant digits.
Organic Chemistry
General organic chemistryA chemist prepares a solution of barium acetate (Ba(C₂H₂O₂)₂) by measuring out 100. g of barium acetate into a 250. mL volumetric flask and filling the flask to the mark with water.
Calculate the concentration in mol/L of the chemist's barium acetate solution. Be sure your answer has the correct number of significant digits.
Organic Chemistry
General organic chemistryDilution A chemist must prepare 725. mL of 5.00 mM aqueous barium chlorate (Ba(ClO3)₂) working solution. She'll do this by pouring out some 49.9 mM aqueous barium chlorate stock solution into a graduated cylinder and diluting it with distilled water.
Calculate the volume in mL of the barium chlorate stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits.
Organic Chemistry
Halogen DerivativesDetermine whether each equation is balanced as written.
CH4 + O₂ CO₂ + H₂O Choose...
2 HCl + Mg(OH)2 → 2 H₂O + MgCl₂ Choose...
H₂ + O₂ → 2 H₂O Choose...
AgNO3 + NaCl →
C6H12O6 +02
Mg + H₂SO4 → MgSO4+H₂ Choose...
NaNO3 + AgCl Choose...
6CO₂ + 6H₂O Choose...
Organic Chemistry
Practical DetectionAccording to the following balanced chemical reaction:
CH4(g) + 2 O₂(g) - CO₂(g) + 2 H₂O(l)
4
What mass (in grams) of CO₂ is produced when 56.5 grams of oxygen are reacted with excess CH4?
Your Answer:
Answer
units
Organic Chemistry
AminesDraw the condensed structure of a 3° amine with 4 carbon atoms, and no double or triple bonds.
Organic Chemistry
General organic chemistryQuestion 3 of 10
Which of these statements about airplane and rocket flight is true?
A. Only one requires combustion reactions to generate thrust.
B. Only one must overcome the force of gravity.
C. Only one requires both fuel and an oxidizer for the combustic
reaction.
D. Only one requires air molecules to generate lift.