Organic Chemistry Questions
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Organic Chemistry
Practical DetectionA sample of krypton gas occupies a volume of 9.50 L at 67.0°C and 376 torr.
If the volume of the gas sample is decreased to 7.66 L, while its temperature is increased to 118.0°C, the resulting gas pressure will be _ torr.
Organic Chemistry
General organic chemistryA sample of helium gas at a pressure of 995 mm Hg and a temperature of 67 °C, occupies a volume of 14.7 liters. If the gas is cooled at constant pressure to a temperature of 20 °C, the volume of the gas sample will be
Organic Chemistry
General organic chemistryFor each of the following sets of pressure/volume data, calculate the missing quantity. Assume that the temperature and the amount of gas remain constant.
a. V = 18.7 L at 101.1 kPa
19.0 L at ? kPa
b. V = 27.7 mL at 752 torr
? mL at 768 mm Hg
mL
c. V = 60.0 L at 1.09 atm
V = ? L at 116.6 kPa
Organic Chemistry
General organic chemistryAn automobile tire is inflated to a pressure of 28.3 psi. Express this pressure in atmospheres, kilopascals, inches Hg, millimeters Hg and torr.
Organic Chemistry
PolymersWhat types of lipids have been used?
triacylglycerols, glycerophospholipids
sphingolipids, glycosphingolipids, waxes
sphingolipids, steroids, prostaglandins
waxes, triacylglycerols
glycerophospholipids, sphingolipids
Organic Chemistry
Chemistry in Daily Life1.16 mol sample of oxygen gas at a temperature of 27.0 °C is found to occupy a volume of 26.6 liters. The pressure of this gas sample is _ mm Hg.
Organic Chemistry
General organic chemistryA sample of neon gas collected at a pressure of 0.795 atm and a temperature of 301 K is found to occupy a volume of 500. milliliters. How many moles of Ne gas are in the sample?
Organic Chemistry
General organic chemistryA sample of helium gas at 307 K and 0.977 atm occupies a volume of 4.55 L. If the gas is compressed into a smaller volume, while at the same time it is heated to a higher temperature, the final gas pressure
could be higher or lower than 0.977 atm depending on the final volume and temperature.
will be lower than 0.977 atm.
will be higher than 0.977 atm.
Organic Chemistry
Halogen DerivativesIn an alkyl halide, the halogen serves 2 functions
that render the alkyl halide reactive towards
substitution and elimination processes. One is
that halgens serve as leaving groups and
substitution/elimination
reactions can only occur
when a leaving group is present. What is the other
reason?
The halogens have pką values above
zero, making them weaker acids and
more likely to participate in dissolution.
The halogen repels electron density
rendering the adjacent carbon atom
nucleophilic and therefore subject to
attack by an electrophile.
The halogen is usually in an allylic
postion and therefore does not
participate in resonance, making it less
stable and more likely to react.
The halogen withdraws electron
density rendering the adjacent carbon
atom electrophilic and therefore
subject to attack by a nucleophile.
Organic Chemistry
BiomoleculesCalculate the number of different octapeptides you can make in which the amino acids phenylalanine, glycine, serine, leucine, histidine, proline, valine, and glutamine are each found. Enter your answer in the provided box.
Organic Chemistry
General organic chemistryWhat is the proper dissociation equation for nitrous acid (HNO₂), a weak electrolyte.
a. HNO₂ →H + N³- +20²-
b. HNO₂ H+N³- +20²-
c. HNO₂ → 2H* + NO²-
d. HNO₂ →H +NO₂-
e. HNO₂ -->H+ + NO₂-
Organic Chemistry
General organic chemistryWhich choice is properly identifies a conjugate pair in the equation below?
H₂O (l) + HS- (aq) OH (aq) + H₂S (aq)
ACID: H₂O
ACID: HS-
ACID: H₂O
CONJUGATE BASE: HS-
ACID: H₂S
CONJUGATE BASE: H₂S
CONJUGATE BASE: OH-
ACID: OH CONJUGATE BASE: H₂S
CONJUGATE BASE: H₂O
Organic Chemistry
General organic chemistryIf 25.0mL of 0.33M sulfuric acid (H₂SO4) is required to neutralize 41.5mL of lithium hydroxide
(LiOH), what is the concentration of the base?
0.10M
0.27M
0.33M
0.40M
1.10M
Organic Chemistry
General organic chemistryShow the products of the following acetylide
alkylation reactions. (Make sure your product has
the correct number of carbons.)
Draw the molecule on the canvas by choosing buttons from the Tools (for bonds and charges),
Organic Chemistry
General organic chemistryWhat is the proper name for the molecule N₂O10?
a. Decoxygen Tetranitride
b. Nitrogen Decoxide
c. Tetranitride Oxide
d. Tetranitrogen Decoxide
e. Nitrogen (IV) Oxide
Organic Chemistry
General organic chemistryA sample of oxygen gas collected at a pressure of 1.16 atm and a temperature of 27.0 °C is found to occupy a volume of 26.6 liters. How many moles of O₂ gas are in the sample?
Organic Chemistry
General organic chemistryFor the reaction below, determine how the reaction rate would be effected based
changes.
2Na(s)+ZnF₂(aq) → 2NaF(aq) + Zn(s)
Addition of more sodium (Na).
Removal of some zinc (Zn).
Placing reaction in an ice bath.
Addition of a catalyst.
Removal of some zinc fluoride (ZnF2).
Increased Reaction Rate
No Change in Reaction Rate
Decreased Reaction Rate
Organic Chemistry
Chemistry in Daily LifeWhat is the molarity of your group's sweet tea? (1 pt)
Given the molecular structure of sugar is C₂H₂O, write out your
need to create the molarity concentration that your group
equation for molarity is: M = (4 pts: 2 pts for work, 2 pts
calculation
has been assigned
for answer)
for how many grams of sugar you will
for 175 mL of water. Remember,
the
Organic Chemistry
General organic chemistryThe elemental analysis of an unknown compound is 57.9 % C, 3.61 % H, and 38.5 % O. The molar mass of this compound is 166 g/mol. Determine the molecular formula of this compound.
A CSH6O4
B. C₂H302
C. C₂H₂0₂
D. C8H604
E. C9 H 10O 3
Organic Chemistry
Chemistry in Daily LifeA sample of oxygen gas at a pressure of 797 mm Hg and a temperature of 66 °C, occupies a volume of 12.6 liters. If the gas is cooled at constant pressure to a temperature of 28 °C, the volume of the gas sample will be _ L.
Organic Chemistry
General organic chemistryIn 1973, Caine and Tuller reported a synthesis of racemic oplapanone, a sesquiterpene isolated from Oplopanax japonicus (a deciduous shrub) involving a reaction we learned in this chapter.
Predict the product of the reaction shown. (Caine, D.; Tuller, F. N. J. Org. Chem. 1973, 38, 3663.)
Organic Chemistry
General organic chemistryWhat are the products of the reaction between hydrofluoric acid (HF) and strontium
carbonate (SrCO3)?
Hydrogen Gas (H₂) & Strontium Fluoride (SrF₂).
Hydrogen Gas (H₂) & Strontium Fluoride (SrF2) & Carbon Dioxide (CO₂).
Water (H₂O) & Strontium Fluoride (SrF2).
Water (H₂O) & Strontium Fluoride (SrF₂) & Carbon Dioxide (CO₂).
Hydrogen Gas (H₂) & Strontium Fluoride (SrF2₂) & Water (H₂O).
Organic Chemistry
Chemistry in Daily LifeA 9.13 gram sample of krypton gas has a volume of 854 milliliters at a pressure of 3.39 atm. The temperature of the Kr gas sample is °C.
Organic Chemistry
General organic chemistryA solution has an [OH-] of 4.5 x 10-8M. Determine the concentration of hydronium (H3O+) ions in
the solution and if the solution is acidic, basic or neutral.
4.5 x 10-22M & Basic
2.2 x 10-7M & Basic
2.2 x 10-7M & Acidic
4.5 x 106 M & Basic
4.5 x 106 M & Acidic
Organic Chemistry
Chemistry in Daily Life1.38 mol sample of helium gas at a temperature of 27.0 °C is found to occupy a volume of 26.7 liters. The pressure of this gas sample is
Organic Chemistry
General organic chemistryCalculate the number of milliliters of 0.687 M KOH required to precipitate all of the Co²+ ions in 117 mL of 0.732 M Co(NO3)2 solution as Co(OH)2. The equation for the reaction is:
Co(NO3)₂(aq) + 2KOH(aq) ---> Co(OH)₂(s) + 2KNO3(aq)
Organic Chemistry
Chemistry in Daily LifeThe concept of determining which reactant is limiting and which is in excess is akin to determining the number of sandwiches that can be made from a set number of ingredients.
Assuming that a cheese sandwich consists of 2 slices of bread and 3 slices of cheese, determine the number of whole cheese sandwiches that can be prepared from 44 slices of bread and 63 slices of cheese.
number of sandwiches:
Organic Chemistry
General organic chemistryD-Erythrose is aldotetrose; it is probably
the major component in erythrocytes. D-
erythrose; it has one of the following
characteristics:
1. It is poly hydroxy aldehyde.
2. It is poly hydroxy ketone.
3. It is poly hydroxy acid.
4. It is poly hydroxy amine.
5. None of the above.
Organic Chemistry
HydrocarbonsHow would adding lye (NaOH) to the sink drain remove the blockage?
Adding NaOH will saponify lipids, forming glycerol and salts of the fatty acids that are soluble in water and would wash down the drain.
Adding NaOH will saponify lipids, forming glycerol and salts of the fatty acids that are soluble in nonpolar organic solvents.
Adding NaOH will decompose lipids, forming CO₂ and H₂O.
Adding NaOH will saponify lipids, forming ethylene glycol and salts of the fatty acids that are soluble in water and would wash down
the drain.
Organic Chemistry
General organic chemistryHow many milliliters of a 0.455 M NaOH solution are needed to completely saponify 13.5 g of glyceryl tristearate (tristearin)?
Express your answer with the appropriate units.
Organic Chemistry
Practical DetectionFor the following reaction, 15.3 grams of sulfur are allowed to react with 20.5 grams of carbon monoxide.
sulfur (s) carbon monoxide (g) ---> sulfur dioxide (g) + carbon (s)
What is the maximum amount of sulfur dioxide that can be formed?
What is the FORMULA for the limiting reagent?
What amount of the excess reagent remains after the reaction is complete?
Organic Chemistry
IsomerismFor the following reaction, 26.4 grams of hydrochloric acid are allowed to react with 66.4 grams of barium hydroxide.
hydrochloric acid (aq) + barium hydroxide (aq) → barium chloride (aq) + water (l)
What is the maximum amount of barium chloride that can be formed?
What is the FORMULA for the limiting reagent?
What amount of the excess reagent remains after the reaction is complete?
Organic Chemistry
Alcohols and PhenolsRead the following lines from Chapter 2 of Oliver Twist by Charles Dickens.
'Please, sir, I want some more.'
The master was a fat, healthy man; but he turned very pale. He gazed in stupefied
astonishment on the small rebel for some seconds, and then clung for support to the
copper. The assistants were paralysed with wonder; the boys with fear.
'What!' said the master at length, in a faint voice.
What do you understand about the situation from the dialogue?
Ecstatic
Shocking and Tense
Calm
Organic Chemistry
General organic chemistryFor the following reaction, 41.7 grams of iron are allowed to react with 15.9 grams of oxygen gas.
iron (s) oxygen (g) ---> iron(III) oxide (s)
What is the maximum amount of iron(III) oxide that can be formed?
What is the FORMULA for the limiting reagent?
What amount of the excess reagent remains after the reaction is complete?
Organic Chemistry
Practical DetectionFor this reaction, 24.9 g iron reacts with 6.05 g oxygen gas.
iron (s) + oxygen (g) ---> iron(II) oxide (s)
What is the maximum mass of iron(II) oxide that can be formed?
What is the FORMULA for the limiting reagent?
What mass of the excess reagent remains after the reaction is complete?
Organic Chemistry
General organic chemistryFor the following reaction, 73.1 grams of barium chloride are allowed to react with 65.1 grams of potassium sulfate.
barium chloride (aq) + potassium sulfate (aq) ---> barium sulfate (s) + potassium chloride (aq)
What is the maximum amount of barium sulfate that can be formed?
What is the FORMULA for the limiting reagent?
What amount of the excess reagent remains after the reaction is complete?
Organic Chemistry
General organic chemistryNitrogen monoxide is produced by combustion in an automobile engine.
For the following reaction, 3.85 grams of oxygen gas are mixed with excess nitrogen monoxide. The reaction yields 8.86 grams of nitrogen dioxide.
nitrogen monoxide (g) + oxygen (g) -> nitrogen dioxide (g)
What is the theoretical yield of nitrogen dioxide ?
What is the percent yield for this reaction?
Organic Chemistry
General organic chemistryDraw the molecular orbital (MO) electron diagram for the N₂- molecular ion.
Be sure your diagram contains all of the electrons in the ion, including any core electrons.
Organic Chemistry
General organic chemistryIn our bodies, sugar is broken down with oxygen to produce water and carbon dioxide. For the following reaction, 0.257 moles of glucose (C6H12O6) are mixed with 0.521 moles of oxygen gas.
glucose (C6H12O6) (s) + oxygen (g) → carbon dioxide(g) + water(l)
What is the formula for the limiting reagent?
What is the maximum amount of carbon dioxide that can be produced?
Organic Chemistry
PolymersFor the following reaction, 0.122 moles of bromine are mixed with 0.120 moles of chlorine gas.
bromine(g) + chlorine(g) → bromine monochloride (g)
What is the formula for the limiting reagent?
What is the maximum amount of bromine monochloride that can be produced?
Organic Chemistry
Practical DetectionFor the following reaction, 2.99 grams of methane (CHA) are allowed to react with 32.4 grams of carbon tetrachloride.
methane (CH4)(g) + carbon tetrachloride (g) ---> dichloromethane (CH₂Cl₂)(g)
What is the maximum mass of dichloromethane (CH₂Cl₂) that can be formed?
What is the FORMULA for the limiting reagent?
What mass of the excess reagent remains after the reaction is complete?
Organic Chemistry
General organic chemistryAccording to the following reaction, how many moles of bromine monochloride will be formed upon the complete reaction of 0.188 moles bromine with excess
chlorine gas?
bromine (g) + chlorine (g) ---> bromine monochloride (g)
moles bromine monochloride
Organic Chemistry
General organic chemistryThe theoretical yield of a reaction is the amount of product obtained if the limiting reactant is completely converted to product.
Consider the reaction:
2 CO(g) + O₂(g) → 2 CO₂(g)
If 9.810 g CO is mixed with 11.82 g O₂, calculate the theoretical yield (g) of CO₂ produced by the reaction.
Organic Chemistry
General organic chemistryAn iron nail rusts when exposed to oxygen.
For the following reaction, 4.26 grams of oxygen gas are mixed with excess iron. The reaction yields 12.2 grams of iron(III) oxide.
iron (s) + oxygen (g) ---> iron(III) oxide (s)
What is the theoretical yield of iron(III) oxide ?
What is the percent yield for this reaction ?
Organic Chemistry
General organic chemistryFor the following reaction, 11.9 grams of nitrogen monoxide are allowed to react with 11.3 grams of oxygen gas.
nitrogen monoxide(g) + oxygen(g) ---> nitrogen dioxide (g)
What is the maximum mass of nitrogen dioxide that can be formed?
What is the FORMULA for the limiting reagent?
What mass of the excess reagent remains after the reaction is complete?
Organic Chemistry
HydrocarbonsHow does the structure of the peptide bond make the structure of proteins relatively rigid? Select the single best answer.
The R groups on adjacent amino acids are on opposite sides of the extended peptide chain,
adding to the rigidity.
The double bond between carbon and oxygen restricts free rotation.
The bond between hydrogen and nitrogen restricts free rotation.
The partially double bonded character of the resonance structure restricts free rotation.
Organic Chemistry
Practical DetectionLin Zexu was
the driving force behind the Meiji restoration.
in charge of stopping the opium trade in China.
a leader of the Self-Strengthening Movement.
the leader of the Taiping rebellion.
the last Qing emperor in China.
Organic Chemistry
BiomoleculesWhat are some functions of lipids in the body?
Check all that apply.
protection for organs
transport of CO2
an important component of cell membranes
transport of oxygen
to provide energy
insulation for organs
Organic Chemistry
General organic chemistryFor the following reaction, 11.2 grams of glucose (C6H12O6) are allowed to react with 15.7 grams of oxygen gas.
glucose (C6H12O6)(s) + oxygen(g) → carbon dioxide(g) + water(l)
What is the maximum amount of carbon dioxide that can be formed?
What is the FORMULA for the limiting reagent?
What amount of the excess reagent remains after the reaction is complete?
Organic Chemistry
Chemistry in Daily LifeFor the following reaction, 47.2 grams of potassium hydrogen sulfate are allowed to react with 17.5 grams of potassium hydroxide.
potassium hydrogen sulfate (aq) + potassium hydroxide (aq) ---> potassium sulfate (aq) + water (l)
What is the maximum amount of potassium sulfate that can be formed?
What is the FORMULA for the limiting reagent?
What amount of the excess reagent remains after the reaction is complete?