Chem Test 2

An alkane with 4 carbons

- is known as butane - has the formula C4H10

An alkene with 6 carbons

- is known as hexene - has the formula C6H12

An alkyne with 8 carbons

- is known as octyne - has the formula C8H14

Which of these is a thiol? A) -SH B) -COH C) -OH D) -NH2 E) none of the above

A) -SH

What is the concentration of OH- ions in pure water? A) 0.0000001 B) 10-14 C) 0.0000007 D) 7 E) 107

A) 0.0000001

An alkane with 4 carbon atoms would have how many hydrogen atoms in each molecule? A) 10 B) 18 C) 16 D) 4 E) 8

A) 10

Which of the following compounds can form hydrogen bonds between its molecules? A) 2-Propanol B) Propanone C) Propanal D) 2-Chloropropane

A) 2-Propanol

Consider the following equilibrium system: 2KClO3(s) <=> 2KCl(s) + 3O2(g) Which of the following actions will cause the position of equilibrium to shift to the left? A) Adding O2(g) B) Adding KCl(s) C) Removing KClO3(s) D) Removing KCl(s)

A) Adding O2(g)

Which compound has the highest boiling point? A) CH3CH2CH2OH B) CH3COCH3 C) CH3CHO D) CH3CH2OH E) CH3CH2CHO

A) CH3CH2CH2OH

Compounds with the general structural formula RCOOR are known as A) Esters B) Aldehydes C) Ketones D) Carboxylic acids E) Alcohols

A) Esters

Which of the following has highest boiling point? A) Ethanol B) ethane C) methane D) methanol E) ethene

A) Ethanol

Which of the following pairs of species is not a conjugate acid-base pair? A) HCl and H+ B) HSO4- and SO42- C) H2SO4 and HSO4- D) H2OandOH- E) NH3 and NH2-

A) HCl and H+

Which of the following is not a conjugate acid - conjugate base pair (in that order)? A) HPO4-, H2PO4- B) H3O+, H2O C) H3PO4, H2PO4- D) HBF4, BF4- E) CH3CH2OH, CH3CH2O-

A) HPO4-, H2PO4-

Which of the following is not a weak base? A) NaOH B) NH3 C) NH4OH D) Amines

A) NaOH

Which of the following compounds can form hydrogen bonds between its molecules? A) Propanol B) Propanone C) Propanal D) Propane

A) Propanol

An equilibrium constant, Keq, has a value of 0.01, which of the following statements is true at equilibrium? A) There are more reactants than products B) The concentration of products is the same as the concentration of reactants C) There are more products than reactants D) Relative composition of reaction mixture cannot be predicted

A) There are more reactants than products

The representation CH3-CH2-CH2-CH2-CH3 for the alkane pentane is an example of A) a condensed structural formula B) a molecular formula C) an expanded structural formula D) a skeletal structural formula

A) a condensed structural formula

An acid is ___________. A) a proton donor B) a proton acceptor C) electron donor D) electron acceptor

A) a proton donor

According to their definitions, which of the following would not occur as unsaturated hydrocarbons? A) alkane B) alkene C) alkyne D) none of the above are correct

A) alkane

Organic Compounds are most likely to A) contain covalent bonds B) be soluble in water C) not burn in air D) have high melting points

A) contain covalent bonds

Name the functional group present in this molecule? CH3CH2COOCH3 A) ester B) phenol C) alcohol D) ketone E) ether

A) ester

The functional group illustrated by R-O-Rʹ is an A) ether B) alcohol C) alkyl D) aldehyde E) ester

A) ether

Which of the following are not isomers? A) hexane and 2- Methylhexane B) hexane and 2-Methyl pentane C) hexane and 2-Ethyl butane D) Heptane and 2,3-Dimethyl pentane

A) hexane and 2- Methylhexane

A strong acid: A) ionizes 100% in water to give all ions B) dissolves in water only as molecules C) does not dissolve in water D) ionizes slightly in water to give molecules and a few ions

A) ionizes 100% in water to give all ions

Identify the functional group present in acetone? A) ketone B) carboxylic acid C) aldehyde D) ether E) amine

A) ketone

Regarding buffer solution which statement is true A) maintains the pH of the solution B) Changes its pH when acid or base is added C) contains a strong acids and bases D) contains a strong acid or base and its salt

A) maintains the pH of the solution

Which of the following molecules has the highest boiling point? A) propanol B) propane C) propene D) propyne

A) propanol

Which of the following molecules has the highest solubility in water? A) propanol B) propyne C) propane D) propene

A) propanol

An alkane with 4 carbon atoms would have how many hydrogen atoms in each molecule? A) 16 B) 10 C) 4 D) 8 E) 18

Answer: B) 10

A solution has a hydroxide-ion (OH-)concentration of 0.043 M. What is its pH? A) 15.37 B) 12.63 C) 17.15 D) 7.00 E) 1.37

B) 12.63

What number would be used to indicate the double bond position in the IUPAC name for CH3CH2CH = CHCH3? A) 1 B) 2 C) 4 D) 3

B) 2

Which possible formula is an isomer of pentane? A) 1-methylbutane B) 2-methylbutane C) 1,2-dimethylbutane D) 2,2-dimethylbutane E) 3-methylbutane

B) 2-methylbutane

The following compounds have similar molecular weights. Which has the highest boiling point? A) CH3CH=O B) C2H5OH C) CH3OCH3 D) CH3CH2CH3

B) C2H5OH

Which compound has the lowest boiling point? A) CH3CHO B) CH3CH3 C) CH3 CH2OH D) CH3CO CH2CH3

B) CH3CH3

Which of the following does not represent a conjugate acid-base pair? A) H2O/OH- B) H3O+/OH- C) HCl/Cl- D) HNO3/NO3- E) NH4+/NH3

B) H3O+/OH-

3. Which of the following has highest boiling point? A) Ethane B) Octane C) Pentane D) 3,3 - Dimethylhexane

B) Octane

Which one of the following molecules has a alcohol functional group? A) R-NH2 B) R-OH C) R-COOH D) R-COOR E) R-OO-R

B) R-OH

A higher pH corresponds to A) a higher [H+] B) a lower [H+] C) no change in [H+] D) a lower [OH- ]

B) a lower [H+]

The hydrocarbons with a double covalent carbon-carbon bond are called A) alkane B) alkene C) alkyne D) alcohols E) none of these

B) alkene

_________ are pleasant smelling liquids. A) ethers B) esters C) alcohols D) ketones

B) esters

Which family of compounds are used as solvents because they are relatively inert? A) alcohols B) ethers C) sulfides D) carboxylic acids

B) ethers

Which of the following compounds does not contain a C=O bond? A) aldehydes B) ethers C) esters D) ketones E) amides

B) ethers

Which is not a common characteristic of an acid? A) all of the above are common characteristics of acids B) it feels soapy C) it dissolves common metals D) it turns litmus pink/red

B) it feels soapy

Which is not a common characteristic of an acid? A) it turns litmus pink/red B) it feels soapy C) it dissolves common metals D) all of the above are common characteristics of acids

B) it feels soapy

What term best describes substances containing carbon? A) natural materials B) organic compounds C) food D) living cells

B) organic compounds

Which of the following is a saturated hydrocarbon? A) propene B) propane C) propyne D) 2-pentene E) none of the above

B) propane

A person who suffers from hyperventilation will exhibit signs of A) respiratory acidosis. B) respiratory alkalosis. C) metabolic acidosis. D) metabolic alkalosis.

B) respiratory alkalosis.

Hydrocarbons are not soluble in water because A) they are hydrophilic. B) the C-H bond is nonpolar C) they do not ionize D) they store energy in the many C-H bonds along the carbon backbone E) they are lighter than water

B) the C-H bond is nonpolar

To prevent respiratory alkalosis, A) the kidneys secrete fewer hydrogen ions. B) the kidneys decrease the bicarbonate production C) the body retains less carbon dioxide. D) the kidneys increase the bicarbonate production

B) the kidneys decrease the bicarbonate production

Alkynes always contain a A) C=C bond B) two carbon with tripple bond C) C=H bond D) C=H bond E) C-C bond

B) two carbon with tripple bond

A solution has a [H3O+] of 1 x 10-5. What is the [OH-] of the solution? A) 1 x 10-5 B) 1 x 10-7 C) 1 x 10-9 D) 1 x 10-14

C) 1 x 10-9

A solution has a [H3O+] of 1 x 10-5. What is the [OH-] of the solution? A) 1 x 10-5 B) 1 x 10-7 C) 1 x 10-9 D) 1 x 10-14

C) 1 x 10-9

If the OH- concentration is 0.001, determine the pH of solution A) 7 B) 14 C) 11 D) 3 E) 0.001

C) 11

What is the pH of a 0.050 M KOH solution? A) 0.30 B) 1.30 C) 12.70 D) 13.70

C) 12.70

What is the molecular formula of cyclopentane? A) C3H6 B) C3H8 C) C5H10 D) C5H12 E) C4H8

C) C5H10

The compound 2,4-dimethylpentane has the molecular formula A) C6H14 B) C8H18 C) C7H16 D) C5H12

C) C7H16

Which of these compounds is the most soluble in water? A) CH3CH2CH2CH2CH2OH B) CH3CH2OCH2CH2CH3 C) CH3CH2CH2CH2CH2COO-Na+ D) CH3CH2CH2CH2CH2CH3 E) CH3CH2CH2CH2CH2COOH

C) CH3CH2CH2CH2CH2COO-Na+

Which of the following compounds would you expect to be most soluble in water? A) CH2Cl2 B) C6H12 (cyclohexane) C) CH3CH2OH D) C2H5OC2H5

C) CH3CH2OH

What is the functional group of this compound: CH3OCH2CH3. A) Amine B) Carboxylic acid C) Ether D) Ketone E) Ester

C) Ether

What is a conjugate acid-base pair for the following equilibrium? H2O(l) + HPO42-(aq) mc010-1.jpg H2PO4-(aq) + OH-(aq) A) H2O is an acid and HPO42- is its conjugate base. B) HPO42- is an acid and OH- is its conjugate base. C) H2O is an acid and OH- is its conjugate base. D) HPO42- is an acid and H2PO4- is its conjugate base. E) HPO42- is an acid and H2O is its conjugate base.

C) H2O is an acid and OH- is its conjugate base.

In a equation HF+H2O <=> H3O+ +F- A) H2O is a base, and HF is its conjugate acid. B) H2O is an acid, and HF is the conjugate base. C) HF is an acid, and F- is its conjugate base. D) HF is a base, and H3O+ is its conjugate acid. E) HF is a base, and F- is its conjugate acid.

C) HF is an acid, and F- is its conjugate base.

The melting and boiling points of hydrocarbons are determined by A) dipole-dipole attraction B) ionic bonding C) London forces D) hydrogen bonding E) ion-dipole attraction

C) London forces

Consider the equilibrium. Which are the Bronsted-Lowry bases?PO43- + H2O <--> HPO42- + HO- A) H2O and HPO42- B) PO43- and HPO42- C) PO43- and OH- D) H2O and OH- E) PO43- and H2O

C) PO43- and OH-

What is the general formula for a ketone? A) R-CO-OH B) R-O-R C) R-CO-R D) R-OH E) R-CHO

C) R-CO-R

What functional group is present in the terpene camphor? A) hydroxy B) carboxy C) carbonyl D) oxy

C) carbonyl

Which of the following molecules are responsible for the scents we smell? A) alcohols B) carboxylic acids C) esters D) thiols

C) esters

_________ are pleasant smelling liquids. A) alcohols B) ethers C) esters D) ketones

C) esters

Which compound is a unsaturated hydrocarbon? A) ethane B) butanol C) ethyne D) ethanol E) dimethyl ether F) cyclohexane

C) ethyne

The organic compound 2,2,4-trimethylpentane is an isomer of A) propane B) pentane C) octane D) heptane E) decane

C) octane

Which of the following compound is more soluble in hexane? A) Pentane B) Water C) octane D) 2-octanol E) octanal

C) octane

How many hydrogen atoms are present in the molecule 3,4-dimethyloctane A) twenty B) twenty-four C) twenty-two D) eighteen

C) twenty-two

Calculate the pH of a solution in which [OH-] = 2.50 × 10-4 M. A) 0.40 B) 3.60 C) -3.60 D) 10.40 E) 13.60

D) 10.40

What number would be used to indicate the double bond position in the IUPAC name for CH3CH2CH = CHCH3? A) 3 B) 1 C) 4 D) 2

D) 2

Which of the following has highest boiling point? A) 2-Octanone B) Octanal C) 2-Octanol D) 3,3 - Dimethypentane

D) 3,3 - Dimethypentane

What is the pH of a solution that has a hydrogen ion concentration of 1.06 X 10 -9 M? A) -8.97 B) 3.67 C) 2.00 D) 8.97 E) 7.00

D) 8.97

propene has molecular formula A) C5H10 B) C5H12 C) C3H8 D) C3H6

D) C3H6

What is the molecular formula of cyclopentane? A) C5H5 B) C5H12 C) C5H14 D) C5H10

D) C5H10

Benzene has the molecular formula A) C6H10 B) C6H12 C) C6H14 D) C6H6

D) C6H6

Which of the following compound pairs are constitutional isomers? A) CH3CH2OCH3 and CH3CH2CHO B) CH3CH2CHO and CH3CH2CH2OH C) CH3COCH2CH3 and CH3CH2COCH3 D) CH3CH2CH2CHO and CH3COCH2CH3

D) CH3CH2CH2CHO and CH3COCH2CH3

Which compound is the most soluble in water? A) CH3CH2CH2CH2OH B) CH3CH2CH2CH3 C) CH3CH2CH2CH2CH2CH2CH2CH3 D) CH3CH2CH2OH E) CH3CH2CH3

D) CH3CH2CH2OH

Organic compounds responsible for flavors in fruits and the scent of flowers are A) Alkanes B) Alcohols C) Ethers D) Esters E) Ketones

D) Esters

Isomers always have the same A) Melting point B) Geometry C) Boiling points D) Molecular formula E) Reactivity

D) Molecular formula

Which of the following molecules is a weak acid? A) R-NH2 B) R-SH C) R-OH D) R-COOH E) none of the above

D) R-COOH

What do methane, ethane, and octane have in common? A) They occur only in ring structures B) They are unsaturated hydrocarbons C) They contain both covalent and ionic bonds D) They are saturated hydrocarbons

D) They are saturated hydrocarbons

What is the expression for Kc for the reaction: C(s) + H2O(g) <=> CO(g) + H2(g) A) {[CO]+[H2]}/{[C]+[H2O]} B) [CO][H2]/[C][H2O] C) {[CO]+[H2]}/[H2O] D) [CO][H2]/[H2O] E) [CO][H2]

D) [CO][H2]/[H2O]

Which of the following cannot be a hydrocarbon? A) substances that form solids or liquids at room temperatures B) substances with low boiling points due to short carbon-hydrogen chains C) methane D) a substance containing only carbon, hydrogen, and nitrogen

D) a substance containing only carbon, hydrogen, and nitrogen

Which functional group compounds have the highest boiling point? A) alkyl halide B) ether C) ketone D) carboxylic acids E) aldehyde

D) carboxylic acids

Which listing of molecules is in order of lowest to highest boiling point? A) methane, water, ethanal, butane B) water, ethanal, butane, methane C) ethanal, butane, methane, water D) methane, butane, ethanal, water

D) methane, butane, ethanal, water

Buffer solutions A) will always have a pH of 7 B) are rarely found in living systems C) cause a decrease in pH when acids are added to them D) tend to maintain a relatively constant pH E) cause an increase in pH when acids are added to them

D) tend to maintain a relatively constant pH

Which pair of compounds are C5H12? A) n-pentane and 1-methylbutane B) 1-methylbutane and 2-methylbutane C) 2-methylbutane and 3-methylbutane D) 2-methylbutane and 2,2-dimethylpropane E) 1,2-dimethylpropane and 2,2-dimethylpropane

E) 1,2-dimethylpropane and 2,2-dimethylpropane

An alkyne with 4 carbon atoms would have how many hydrogen atoms in each molecule? A) 4 B) 8 C) 10 D) 16 E) 6

E) 6

Which of the following compounds can form hydrogen bonds between its molecules? A) CH3CH2OCH2CH3 B) CH3CH2CH2Br C) CH3CH2N(CH3)2 D) CH3CH2CH2F E) CH3CH2CH2OH

E) CH3CH2CH2OH

The general formula of a carboxylic acid is A) R-H B) R-CO-R' C) R-CO-OR' D) R-O-R' E) R-CO-OH

E) R-CO-OH

Which of the following molecules is a weak acid? A) R-NH2 B) R-OH C) R-SH D) none of the above E) R-COOH

E) R-COOH

Which one of the following molecules has a carboxyl functional group? A) R-SH B) R-COH C) R-NH2 D) R-OO-R E) R-COOH

E) R-COOH

Alcohols are hydrocarbon derivatives in which one or more hydrogens have been replaced by a hydroxyl functional group. Which of the following is the general formula of an alcohol? A) R-CO-R B) R-CO-OH C) R-O-R D) R-CO-H E) R-OH

E) R-OH

Which one of the following is not an alcohol? A) cholesterol B) glycerol C) ethanol D) ethylene glycol E) acetone

E) acetone

Which one of the following is not an alcohol? A) ethanol B) cholesterol C) glycerol D) ethylene glycol E) acetone

E) acetone

Which one of the following functional groups increases the solubility of organic compounds in water? A) -SH B) -COOH C) -COH D) -NH2 E) all of the above

E) all of the above

True or False: In this reaction is water acting only as a Bronsted-Lowry Base? a) H2SO4(aq) + H2O(l) --> HSO4-(aq) + H3O+(aq)

True