Name:---=:;...._~_· __AP ChemistryFinal Exam: Mnltiple ChoiceNo calculators are allowed.

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1. Which of the following molecules is expected to have the lowest normal boiling point?A. CH3CH2CH2CH3 IB. CH3CH2CH2CH20HC. CH3CH2CH2CH2CID. CH3CH2CH2CH2FE. None ofthe above or not enough information has been provided ..

2. Monatomic ions of the repLsentative elements are often:A. Isoelectronic with a noble gasB. Highly coloredC. Very solubleD. Radioactive IE. None of the above or not enough information has been provided.

An atom that has four sigma bonding pairs of electrons and two nonbonding pair of electrons is expected to havewhich of the following types of molecular geometry and bonding?

A. Tetrahedral, Sp3B. Square planar, sp3d2

C. Octahedral, Sp3d2

D. Square pyramidal, sp3d2E. None of the above or not enough information has been provided.

IHund's rule states that, in an atom:

A. No two electrons can have the same energyB. No two electrons with the same spin can occupy an orbital

g: ~~:~ :!:~:~~:t:h:~ei~~~::!: ~:u:~~~:!e:=~:~:bital availableE. None of the above or not enough information has been provided.

Which of the following is true?A. All chlorides, bromides, and iodides are soluble.B. All sulfates are sdluble.C. All hydroxides are soluble.D. All acetate compounds are soluble.E. All of the above are false.

Which of the following belt explains why diamonds are hard and graphite is soft?A. The carbon-carbon bonds in diamonds are of higher energy than those in graphite.B. The melting point of diamonds is higher than that of graphite.C. Diamond is Sp3hybridized, while graphite is Sp2.D. The carbon-carbon bonds in diamonds are shorter than those in graphite.E. None of the above or not enough information has been provided.

When collecting a gas over water, it is important to:A. Set the temperature to O°C.B. Ensure the room ¥essure is 760 mm Hg,C. Collect a gas that liSnot flammable.D. Correct for the vapor pressure of water.E. None of the above or not enough information has been provided.

Which of the following atoms or ions is largest in size?A. S2-B. CI1-

C. K1+D. Ca2+

E. None of the above or not enough information has been provided.

Which lists the following solutions, ] .O-rnolal AgBr, l.O-molal Br2, and l.O-molal LiBr, in order of decreasingboiling point? I

A AgBr = LiBr, Br2B. LiBr, Br2' AgBrC. Br2' AgBr = LiBrD. LiBr, AgBr = Br2/E. AgBr, LiBr, Br2

10. How many moles of O2 are required in the combustion of 1 mole of butene?A. 2 molesB. 6 molesC. 9/2 molesD. 5/2 molesE. None of the above or not enough information has been provided.

11. A measured mass of a non-reactive metal was dropped into a small graduated cylinder half-filled with water. Thefollowing measurements were made.

Mass of metal = 45.00 gVolume of water before addition of metal = 10 mLVolume of water after addition of metal = 25.0 mL

The density (in g/md of the metal should be reported asA 3.0000B. 3.000C. 3.00D. 3.0E. 3

F 12. Which of the following is not a characteristic of elemental potassium?A. A solid element at room temperature.B. Has perceptible color at room temperature.

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C. Conducts electricity.D. Reacts with oxygen gas to produce a basic anhydride.E. All of the above are characteristic.

A 13. Of the following, the least fdeal gas is:A. lzB. H2C. O2D. CHtE. Ne IA 14. Which of the following molecules has the largest bond order?A. N2B. O2

C. Br2D. s, IE. None of the above or not enough information has been provided ..

f; 15. Which of the following elements would have the smallest first ionization energy?ANB.OC. FD. Ne

E. None ofthe above or not enough information has been provided .

.B 16. The quantum number m, (i.e., subscript is a lowercase "L") signifies:A. The relative distance of the electron from the nucleus.B. The orientation in ispace of a particular orbitalC. The shape of an orbitalD. The spin of the elJctronE. None of the above or not enough information has been provided.

c 17. Which of the following atoms would be considered paramagnetic?I. N

II. CrIII. Be

A. I onlyB. III onlyC. I and II onlyD. II and III onlyE. I, II, and HI

18. The electronic configuration of the metal ion in ferric iodide is Is2 2s22p6 3s2 3p6 •••

A. 4s23d4

B. 4s13d5

C. 3d6

D. 3d5I

E. None of the above or not enough information has been provided.

19. Which of the following is considered a state function?I. Enthalpy

II. PressureIII. Heat

A. I onlyB. III onlyC. I and II onlyD. II and Ill onlyE. I, II, and III

20. The flame test color for lithium is:A. GreenB. Lilac (violet)C. RedD. YellowE. None of the above or not enough information has been provided.

21. As the molar mass of a sample of a gas decreases, its rate of effusion will:A. DecreaseB. IncreaseC. Remain constantD. Rate of effusion is independent of temperatureE. None of the abovJ or not enough information has been provided.

I22. Which ofthe following would, when added to water, produce an acid?

I. H2II. N02

Ul. Na20A. I onlyB. II only

C. I and 11onlyD. II and III onlyE. I, 11,and ill

1(j. 23. The kinetic molecular theof of gases states that:L The average kinetic energy of a gas is related to the Kelvin temperature.

II. Ideal gas particles do not attract or repel each other1lI. Ideal gas particles have no pressure

A I onlyB. II onlyC. I and II onlyD. I and ill onlyE. T,II, and ill

24. The net ionic equation expected when solutions ofNF4Br and AgN03 are mixed is:A Agl+ (aq) + NOt (aq) -- AgN03 (s)B. AgI+ (aq) + 2 NRtI+ (aq) -- Ag(NH3)2 (s) + H2 (g)C. AgI+ (aq) + Brl- (aq) __ AgBr (s)D. NRtI+ (aq) + n-': (aq) -- NRtBr (s)E. None of the above or not enough information has been provided.

25. Which of the following is not a good measure of relative intermolecular attractive forces?A. ElectronegativityB. Boiling pointsC. Vapor pressuresD. Heat of vaporizationE. N~ne of the above or not enough information has been provided.e 26. Which ofthe following obeys the octet rule?A BeF2B. H30+C. ArF4D. SF6

E. None of the above or not enough information has been provided.

('f 27. If a reaction is carried out la series of steps, the change in enthalpy of the reaction will equal the sum of the~ enthalpy changes for the individual steps. This statement is known as:

A Haber's processB. Henry's lawC. Hess'lawD. Hund's ruleE. None of the above or not enough information has been provided.

28. Which of the following correctly lists the individual intermolecular attractive forces in decreasing strength?A. Hydrogen bonds, dipole-dipole, London dispersionB. Dipole-dipole, London dispersion, hydrogen bondsC. London dispersion, hydrogen bonds, dipole-dipoleD. Dipole-dipole, hYFogen bonds, London dispersionE. None of the above or not enough information has been provided.

I29. What is the total number of isomers for C3Hu?

AlB. 2C. 3D. 4E. None of the above or not enough information has been provided.

-A 30. Which series is ranked in order from smallest to largest (becoming more negative) electron affinity?A. N,O,FB. N,F,OC. F,O,ND.O,N,FE. None ofthe above or not enough information has been provided.

C 31. What is the formal charge on the iodine atom in iodous acid?A. -1B. +1C. +2D. +3E. +5

32. A solid sample of aluminum carbonate is strongly heated to drive off carbon dioxide, which is then bubbledthrough a solution of barium hydroxide, forming barium carbonate and water. How many moles of bariumhydroxide are required to completely react with 0.60 moles of aluminum carbonate?

A. 0.1B. 0.6C. 1.8D. 3.6E. None of the above

iJ 33. Which of the following is insoluble in water?A. LiBrB. HgS04

C. FeChD. Mg(N03)2E. None of the above or not enough information has been provided.

t 34. The ideal gas law represents real gases when a gas sample is experiencing which of the following conditions?A. Low pressure and low temperatureB. Low pressure and high temperatureC. High pressure and low temperatureD. High pressure and high temperatureE. None of the above or not enough information has been provided.

-F 35. Which of the following does not contain oxygen?A. An aldehydeB. An esterC. An alcoholD. An etherE. All of the above contain oxygen.---C 36. Which ofthe following has "cis-trans" isomerism?A. PF4B. H20C. CChF2

D. H2S02

E. None of the above or not enough information has been provided.

b 37. Which should have the largest bond polarity?A. S-OB. P-F

C. C-BD. C-NE. CI-Br

-D 38. What is the oxidation state of manganese in permanganate?A. -1B. +3

C. +5 ID. +7E. None of the above or not enough information has been provided.

39. The correct name for the compound K3P is:A. Potassium hypophosphiteB. Potassium phosphateC. Potassium phosphideD. Tripotassium monophosphideE. None of the above or not enough information has been provided.

40. As the frequency of electromagnetic radiation decreases, the wavelengthA. DecreasesB. IncreasesC. Remains constantD. Varies exponentiallyE. None of the above or not enough information has been provided.

A 41. Which of the following is a temperature-dependent concentration unit?A. MolarityB. Mole fractionC. Weight percentD. MolalityE. None of the above or not enough information has been provided.

B 42. Which of the following lists the electromagnetic spectral regions in order of increasing energy?A. X-ray, ultraviolet, visibleB. Infrared, visible, ultravioletC. Ultraviolet, visible, infraredD. X-ray, visible, infraredE. None of the above or not enough information has been provided.

43. An element in its ground state:A. Is an element that is unreactive and found free in natureB. Has all of its electrons pairedC. Has all of its electrons in the lowest possible energy levelsD. Is an element as found in natureE. None of the above or not enough information has been provided.

B 44. AP Chemistry is difficult, but it willA. Lead to insanity, orjat least a mini-break downB. Help me in CollegeC. Get easier if! stick aroundD. Make me appreciate general chemistryE. Be my ticket to success

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Represented above are five identical balloons, each filled to the same volume at 25°C and 1.0atmosphere pressure with the pure gases indicated.

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(b)Compare the average kinetic energies of the gas molecules in the balloons. Explain. (2 points)

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(c) Which balloon contains clolecules that would travel at the lowest molecular speed?Explain. (2 points)

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(d) Twelve hours after being filled, all the balloons have decreased in size. Predict which balloon will bethe smallest. Explain your reasoning. (2 points)

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