Organic Chemistry Questions
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Organic Chemistry
General organic chemistryWhat is the common name of this compound?
A) trimethylamine
B) diethylamine
C) ethylmethylamine
D) ethylmethylnitride
E) ethyldimethylamine
Organic Chemistry
Practical DetectionWrite the balanced chemical equations for the reactions in which sodium phosphate is added to copper(II) sulfate and iron(III)
chloride, respectively. Include states of matter.
copper(II) sulfate and sodium phosphate:
iron(III) chloride and sodium phosphate:
These are examples of reactions.
Organic Chemistry
Reactions of benzeneWhat is STP (Standard Temperature
and Pressure
STP is 730 mm Hg and 273.15 deg C
STP is 760 torr and 298 K.
STP is 1 atm of pressure and deg C.
STP is 700 torr of pressure and deg C.
Organic Chemistry
General organic chemistryWhich solution contains the largest number of chloride ions?
50.0 mL of 0.60 M MgCl₂
200.0 mL of 0.40 M NaCl
50.0 mL of 0.60 M AICI,
Organic Chemistry
General organic chemistryComplete combustion of 7.50 g of a hydrocarbon produced 23.0 g of CO₂ and 11.0 g of H₂O. What is the empirical formula for the hydrocarbon? Insert subscripts as necessary.
Organic Chemistry
General organic chemistryToday, people are struggling with the
Covid-19 virus, and many scientists
are working on the virus. 3. Which of
the following could be the chemistry
discipline that studies the effects of
virus-related drugs and vaccines on
the human body? A) Physiochemistry
B) Polymer chemistry C) Biochemistry
D) Forensic chemistry E)
Petrochemistry
Organic Chemistry
HydrocarbonsHow many electrons are in energy level 3 of the
following elements?
a. argon
b. carbon
Organic Chemistry
General organic chemistryHow many unpaired electrons are there in the
orbital diagram for oxygen?
1
2
3
6
0
Organic Chemistry
IsomerismWhat is the maximum mass of pure copper that could be extracted from
175. g of chalcopyrite, a copper ore with the chemical formula CuFeS₂?
Be sure your answer has a unit symbol, if necessary, and is rounded to 3
significant digits.
Organic Chemistry
Chemistry in Daily LifeWhen opening a bottle of perfume, the first scent one can smell is:
the Light weight, head note molecules.
all Three classes of molecules at once.
the Medium weight, heart note molecules.
the Heavy weight, bass note molecules.
Organic Chemistry
Chemistry in Daily LifeThe following unbalanced equation shows how hydrogen and oxygen combine to form water.
2H₂ + O2 H₂O
When the equation is balanced, the coefficient for water (H₂O) will be
4.
0
1
2
Organic Chemistry
General organic chemistryWhat is an orbital?
the region of space around the nucleus with
the highest probability of finding an electron
the exact position of a nucleus at any given
moment in time
the path that an electron takes around the
nucleus
a circular energy level where the electron
resides
Organic Chemistry
General organic chemistryConsider the neutralization reaction
2 HNO3(aq) + Ba(OH)₂ (aq) → 2H₂O(1) + Ba(NO3)₂(aq)
A 0.100 L sample of an unknown HNO, solution required 39.3 mL of 0.150 M Ba(OH)₂ for complete neutralization. What is the concentration of the HNO3 solution?
Organic Chemistry
Chemistry in Daily LifeLead(II) nitrate and ammonium iodide react to form lead(II) iodide and ammonium nitrate according to the reaction
Pb(NO3)₂(aq) + 2NH4I(aq) → Pbl₂ (s) + 2NH4NO3(aq)
What volume of a 0.470 M NH4l solution is required to react with 239 mL of a 0.700 M Pb(NO3)2 solution?
How many moles of Pbl2 are formed from this reaction?
Organic Chemistry
Chemistry in Daily LifeWhat will be the result of trying to cook rice by boiling water at an elevation 5,000
meters above sea level compared to doing the same cooking at sea level?
The boiling point will be higher at the higher elevation and cooking times will
increase.
The boiling point will be lower at the higher elevation and cooking times will
decrease.
The boiling point will be remain the same but cooking will be quicker.
The boiling point will be higher at the higher elevation and cooking times will
decrease.
The boiling point will be lower at the higher elevation but cooking times will
increase.
Organic Chemistry
General organic chemistry19) Which R group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein?
A)-CH2-OH
B)-CH₂-COO-
C)-CH₂-
D)- CH₂ CH₂ CH₂ CH2N H3
E) CH2-C–NH,
Organic Chemistry
General organic chemistryA barium hydroxide solution is prepared by dissolving 1.53 g of Ba(OH), in water to make 74.3 mL of solution. What is the concentration of the solution in units of molarity?
concentration:
The barium hydroxide solution is used to titrate a perchloric acid solution of unknown concentration. Write a balanced chemical equation to represent the reaction between barium hydroxide and perchloric acid.
chemical equation:
If 17.9 mL of the barium hydroxide solution was needed to neutralize a 5.46 mL aliquot of the perchloric acid solution, what is the concentration of the acid?
concentration:
Organic Chemistry
Practical DetectionLiquid octane (CH₂(CH₂) CH3) will react with gaseous oxygen (0₂) to produce gaseous carbon dioxide (CO₂) and gaseous water (H₂O). Suppose 4.6 g of octane is mixed with 8.48 g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Round your answer to 3 significant digits.
Organic Chemistry
BiomoleculesAluminum is on group 13 of the periodic table.
Which option describes how aluminum most commonly behaves
when forming ions?
It loses 1 electron.
It loses 4 electrons.
It loses 2 electrons.
It loses 3 electrons.
Organic Chemistry
BiomoleculesIndicate at which step of the replication-transcription-translation process each type of RNA first participates. Place them in the bin where they are first created or first participate.
Drag each item to the appropriate bin.
Organic Chemistry
IsomerismLiquid hexane (CH3(CH₂) CH3) will react with gaseous oxygen (O₂) to produce gaseous carbon dioxide (CO₂) and gaseous water (H₂O). Suppose 6.0 g of
hexane is mixed with 31.1 g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Round your answer to 2 significant digits.
Organic Chemistry
Practical Detection4 HCl(aq) + MnO₂ (s) ⇒ MnCl, (aq) + 2 H₂O(1) + Cl₂(g)
A sample of 43.9 g MnO₂ is added to a solution containing 43.1 g HCI.
What is the limiting reactant?
HCI
MnO₂
What is the theoretical yield of Cl₂?
theoretical yield:
Organic Chemistry
Carboxylic acidsWhat is an IUPAC name of following
compound?
A. 2-(tert-butyl)-5-chlorohexanoic acid
B. 2-(sec-butyl)-5-chlorohexanoic acid
C. 2-(tert-butyl)-5-chlorohexanoic acid
D. 2-(iso-butyl)-5-chlorohexanoic acid
E. 2-(iso-butyl)-5-chloropentanoic acid
Organic Chemistry
Aldehydes & Ketones1. a) Write a detailed mechanism for the formation of dibenzalacetone.
b) Give the IUPAC name of dibenzalacetone.
c) Do you expect the configuration of the double bonds in this compound to be E, Z, or a
mixture of both? Why?
Organic Chemistry
Aldehydes & KetonesBismuth-214 can decay to form either polonium-214 or thallium-210, depending on what type of radiation is emitted. Write a balanced nuclear equation for each process. Give all nuclei in the form X.
Bismuth-214 to polonium-214 decay:
Bismuth-214 to thallium-210 decay: F
Organic Chemistry
Alcohols and PhenolsChoose the correct product for the following reaction:
2-bromo-2-methylpropane
no reaction
2-bromopropane
2-methyl-2-propanol
2-bromopropanol
Organic Chemistry
BiomoleculesWrite the complementary sequence for the following DNA sequence, in order from 3 to 5:
5'-CGATATTGAGCTAAGCTT-3
Use all capital letters to write the DNA sequence.
Organic Chemistry
Chemistry in Daily LifeAn atom of an unknown element can lose 3 electrons to reach a full octet.
Which of the following is most likely to be that element?
Calcium with 20 electrons in 2-8-8-2 configuration.
Aluminum with 13 electrons in 2-8-3 configuration.
Sulfur with 16 electrons in 2-8-6 configuration.
Silicon with 14 electrons in 2-8-4 configuration.
Organic Chemistry
BiomoleculesA student performs a menthol dehydration experiment with 3.099 grams of pure, powdered menthol (NOT an 85% solution. Pure menthol). The molecular weight of menthol is 156.26 g/mol and the molecular weight of the product, menthene, is 138.25 g/mol. What is the theoretical yield of menthene in grams?
Organic Chemistry
General organic chemistryAn 80.0 g sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its internal energy increased by 6905 J. What is the specific heat of the gas?
C= J/(g. *C)
Organic Chemistry
Chemistry in Daily LifeThe first ionization energy of Al is less than that of Mg.
Select all of the following statements that are true AND describe factors contributing to the lower first ionization energy of Al as compared to Mg.
Al has no aligned spins in a partially filled 3p subshell
Al has a filled 3s subshell
Mg has a filled 3s subshell
Mg has no aligned spins in a partially filled 3s subshell
Organic Chemistry
General organic chemistryGiven the thermochemical equations
X₂ +3 Y₂2 XY3
AH₁ = -370 kJ
X₂ +2Z₂ → 2XZ₂
AH₂ = -170 kJ
2Y₂+Z₂2Y₂Z
AH3 = -230 kJ
Calculate the change in enthalpy for the reaction.
4XY3 +7Z₂6Y₂Z+4XZ₂
Organic Chemistry
Practical DetectionA researcher studying the nutritional value of a new candy places a 5.70 g sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.69 "C. If the heat capacity of the calorimeter is 42.70 kJ-K-¹, how many nutritional Calories are there per gram of the candy?
Calories per gram of candy: Callg
Organic Chemistry
General organic chemistryA hot lump of 49.1 g of copper at an initial temperature of 87.2 °C is placed in 50.0 mL. H,O initially at 25.0 °C and allowed to reach thermal equilibrium. What is the final temperature of the copper and water, given that the specific heat of copper is 0.385 J/(g-°C)? Assume no heat is lost to surroundings.
Organic Chemistry
General organic chemistryThis is the chemical formula for talc (the main ingredient in talcum powder):
Mg3 (Si₂O5), (OH)₂
An analytical chemist has determined by measurements that there are 83.9 moles of oxygen in a sample of talc. How many moles of hydrogen are in the sample?
Organic Chemistry
IsomerismWhen a 8.00 g sample of KCI is dissolved in water in a calorimeter that has a total heat capacity of 4.73 kJ. K-¹, the temperature decreases by 0.390 K. Calculate the molar heat of solution of KCI.
Organic Chemistry
EthersThis Is Un chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE):
CH₂OC(CH3)₂
A chemical engineer has determined by measurements that there are 8.79 moles of hydrogen in a sample of methyl tert-butyl ether. How many moles of oxygen
are in the sample?
Round your answer to 3 significant digits.
Organic Chemistry
Chemistry in Daily LifeWhat is the maximum mass of pure gold that could be extracted from 2.5 kg of calaverite, a gold ore with the chemical formula Aute?
Be sure your answer has a unit symbol, if necessary, and is rounded to 2 significant digits.
Organic Chemistry
PolymersSolid aluminum (Al) and chlorine (C1₂) gas react to form solid aluminum chloride (AIC13). Suppose you have 11.0 mol of Al and 5.0 mol of Cl₂ in a reactor. What would be the limiting reactant? Enter its chemical formula below.
Organic Chemistry
Practical DetectionAcetylene (C₂H₂) gas and oxygen (O₂) gas react to form carbon dioxide (CO₂) gas and water (H₂O) vapor. Suppose you have 11.0 mol of C₂H₂ and 3.0 mol
of O₂ in a reactor.
What would be the limiting reactant? Enter its chemical formula below.
Organic Chemistry
Ethers"Intermolecular Dehydration of an Alcohol" towards unsymmetrical ether synthesis.
Give an example synthesis for methyl phenyl ether using the "Williamson Ether
Explain the advantages of the "Williamson Ether Synthesis" compared to an
Synthesis".
Organic Chemistry
BiomoleculesWhat is the abbreviation for deoxythymidine-5'-monophosphate?
Enter the abbreviated name for the nucleotide. For example, adenosine-5'-triphosphate is abbreviated ATP.
Organic Chemistry
Practical DetectionCalculate the number of moles of solute in 37.05 mL of 0.1155 M K₂Cr₂O, (aq).
moles of solute: mol
Organic Chemistry
General organic chemistryThe specific heat of a certain type of metal is 0.128 J/(g-"C). What is the final temperature if 305 J of heat is added to 65.8 g of this metal, initially at 20.0 "C?
Tfinal
Organic Chemistry
General organic chemistrySelect all of the reagents that can be used to produce the Anti-Markovnikov product
when reacted with an alkene or alkyne.
Select all of the reagents that can be used to produce the Anti-Markovnikov product.
A. H₂, Ni
B. Li, EtNH), NH
C. BH3:THF, H₂O₂, HO
D.Hg(OAc)2. THF/H₂O, NaBH4
E. HBr
F. HBr. (PhCO) ₂0₂
A
B
C
D
E
F
Organic Chemistry
General organic chemistryTreatment of an organic compound with hot, concentrated hydriodic acid (also known as the Zeisel analysis) yields CH-I, indicating the presence of a methoxyl group (-OCH;). Unknown organic compound F (one of the opium alkaloids used in antispasmodic medicine, whose formula is CisH₂NO3) was treated with hot concentrated hydriodic acid to determine the number of methoxyl groups present in the molecule. When 7.12 mg of compound F is treated with hydriodic acid and the CH-1 thus formed is passed into alcoholic silver nitrate, 10.73 mg of silver iodide is obtained. How many methoxyl groups per molecule of compound F would be indicted by the results of this Zeisel analysis? (3 points)
Organic Chemistry
IsomerismNitrogen (N₂) gas and hydrogen (H₂) gas react to form ammonia (NH3) gas. Suppose you have 7.0 mol of N₂ and 2.0 mol of H₂ in a reactor.
Suppose as much as possible of the N₂ reacts. How much will be left? Round your answer to the nearest 0.1 mol.
Organic Chemistry
IsomerismWhich of the following statements is true about a reversible reaction that has reached chemical equilibrium?
The forward reaction occurs at a faster rate than the reverse reaction.
The rate of the forward reaction is increasing while the reverse reaction has completely stopped.
The forward and reverse reactions occur at the same rate.
The reverse reaction occurs at a slower rate than the forward reaction.
Organic Chemistry
General organic chemistrySuppose you separate a 2.37 g mixture of sand and salt and recover 1.44 g of salt. What is the percent by mass of salt in the mixture?
Organic Chemistry
General organic chemistrySEP Analyze Data The lines on the phase diagram are labeled X, Y, and Z.
Identify which line shows these phases.
sublimation:
melting:
vaporization