Quiz 12 Flashcards
- Which process is used to separate a mixture of hydrocarbons with different boiling points?
cracking
oxidation
fractional distillation
dehydration synthesis
fractional distillation
- During condensation polymerization, two monomers may be joined by the removal of a molecule of
carbon dioxide
oxygen
water
hydrogen
water
- Which organic compound is a weak electrolyte?
acetic acid
carbon tetrachloride
pentane
benzene
acetic acid
- Which element is a nonmetallic liquid at room temperature?
hydrogen
oxygen
mercury
bromine
bromine
- What is the product of both fermentation reactions and saponification reactions?
an ester
an alcohol
an acid
a soap
an alcohol
- The following set of procedures was used by a student to determine the heat of solution of NaOH. (1) Read the original temperature of the water. (2) Read the final temperature of the solution. (3) Pour the water into a beaker. (4) Stir the mixture. (5) Add the sodium hydroxide. What is the correct order of procedures for making this determination?
1-3-5-2-4
5-4-3-1-2
3-1-5-4-2
3-5-4-1-2
- Which compounds are isomers?
1-propanol and 2-propanol
ethane and ethanol
methanoic acid and ethanoic acid
methanol and methanal
1-propanol and 2-propanol
- Given the equations 1, 2, 3 and 4 : (1) AgNO3 + NaCl AgCl + NaNO3 (2) Cl2 + H2O HClO + HCl (3) CuO + CO CO2 + Cu (4) NaOH + HCl NaCl + H2O Which two equations represent redox reactions?
1 and 2
3 and 1
2 and 3
4 and 2
2 and 3
- According to Bronsted-Lowry theory, and acid is any species that can
donate a proton
accept a proton
donate an electron
accept an electron
donate a proton
- Which statement best describes how a salt bridge maintains electrical neutrality in the half-cells of an electrochemical cell?
It prevents the migration of electrons.
It permits the two solutions to mix completely.
It permits the migration of ions.
It prevents the reaction from occurring spontaneously.
It permits the migration of ions.
- When sample X is passed through a filter paper, a white residue, Y, remains on the paper and a clear liquid, Z, passes through. When liquid Z is vaporized, another white residue remains. Sample X is best classified as
an element
a homogeneous mixture
a compound
a heterogeneous mixture
a heterogeneous mixture
- What is the total number of carbon atoms in molecule of glycerol?
1
3
2
4
3
- To be classified as a tertiary alcohol, the functional –OH group is bonded to a carbon atom tat must be bonded to a total of how many additional carbon atoms?
1
3
2
4
3
- Which conditions will increase the rate of a chemical reaction?
decreased temperature and decreased concentration of reactants
decreased temperature and increased concentration of reactant
increased temperature and decreased concentration of reactants
increased temperature and increased concentration of reactants
- Bleaches act on stains by
removing electrons during the oxidation process
reducing the colored compound by adding electrons.
exciting electrons to move between energy levels.
adding hydrogen ions to the stain.
removing electrons during the oxidation process
- One sample of a solution with a pH of 10 is tested with phenolphthalein and another sample of this solution is tested with litmus. In this solution the color of the litmus is
blue and the phenolphthalein is pink
blue and the phenolphthalein is colorless
red and the phenolphthalein is pink
red and the phenolphthalein is colorless
blue and the phenolphthalein is pink
- Methanal is the IUPAC name for an
aldehyde
alcohol
acid
ether
aldehyde
- On heating glucose with Fehling’s solution we get a precipitate whose color is
yellow
red
black
white
red
- If formaldehyde and KOH are heated we get
acetylene
methane
methanol
ethyl acetate
methanol
- Which of the following is formed when urea is heated?
ammonium cyanate
ammonia
carbon dioxide
formic acid
ammonia
- Also known as “The Clean Air Act of 1999”.
RA 8749
PD 984
RA 6969
PD 600
RA 8749
- H+ is a/an
proton
acid
element
negatively charged electron
proton
- Materials added to detergent formulation to enhance cleaning performance by exhibiting synergistic cleaning effect with surfactant.
fillers
brighteners
builders
perfume
builders
- Esters are formed from condensation reactions between
alcohols and aldehydes
aldehydes and acids
ethers and acids
alcohols and acids
aldehydes and acids
- Which of the following is the most reactive?
propene
propyne
propane
cyclopropane
propyne
- What is the name of the following alkane? CH3—CH(CH3)—CH(CH3)—CH3
2,3-dimethyl butane
1-isopropyl-1-methyl ethane
1,1,2-trmethyl propane
1,3-dimethyl butane
2,3-dimethyl butane
- Pentane and isopentane are what type of isomers?
aldehydes
chiral
structural
enantiomers
structural
- An alkyne contains at least one of which of the following carbon-carbon bonds?
double
quadruple
triple
single
triple
- How many carbon atoms does butane contain?
1
2
4
5
4
- What is the hybridization of the oxygen atom in an aldehyde?
sp
sp³
d²sp³
sp²
sp²
- CH3CH2C(O)NH2 is called a(n)
ketone
ester
aldehyde
amide
amide
- What is the general formula for an aldehyde?
R-CO-OH
R-CO-H
R-O-R
R-OH
R-CO-H
- What is the general formula for an alcohol?
R-CO-OH
R-CO-H
R-O-R
R-OH
R-OH
- Of the following, which are the most reactive?
alkanes
alkenes
cycloalkane
alkynes
alkynes
- Which of the following is not an alkane?
C3H8
C7H16
C5H12
C9H18
C9H18
- What is the IUPAC name for the following compound? H3C— CH(CH3) — CH2 — C ==CH2
2,5-dimethylpentane
2,4-methylbutene
2,4-dimethyl-1-pentene
2,4-ethylbutene
2,4-dimethyl-1-pentene
- What is the general formula for alkanes?
CnH2n
CnH2n-2
CnH2n-2
CnH2n+2
CnH2n+2
- If each of the following is an alkane, which one must be cyclic?
C7H14
C22H46
C3H8
C12H26
C7H14
- Which one of the following is a saturated hydrocarbon?
alkane
alkene
aromatic hydrocarbon
alkyne
alkane
- What is the distinguishing characteristic of a carbohydrate?
carbonyl group
two-C-OH groups
Cx(H2O)y formula
six carbon atoms
Cx(H2O)y formula
- If we add Cl2 to 1-butene, what is the product?
CH3CH2CCl2CH3
CH3CH2CCl2CHCl2
CH3CH2CH2CHCl2
CH3CH2CHClCH2Cl
CH3CH2CHClCH2Cl
- What is the name of the following alkene? CH3—CH2—CH == CH—CH3
3-pentene
2-pentane
pentene-2
2-pentene
2-pentene
- What is the name of the following compound?CH3—CH2—CH(OH)—CH3
3-butanol
2-butanol
3-pentanol
2-pentene
2-butanol
- Which is not a correctly named alkyl group?
C2H5 – ethyl
C3H7—propyl
C4H10– butyl
CH3 – methyl
C4H10– buty
- What is the name of the following compound? CH3—CH2—CH(CH3)—CH(CH3)—CH2—CH3
3,4-dimethylhexane
3-butylbutane
3-methyl 4-ethylpentane
3,5-octane
3,4-dimethylhexane
- What is the basic formula of an alkyne of n carbon atoms?
CnH2n+2
CnH2n
CnHn
CnH2n-2
CnH2n-2
- What characterizes a starch?
it is a collection of polysaccharides in plants
it is a cellulose
it is a trisaccharide
it has six carbons
it is a collection of polysaccharides in plants
- CH2O is the empirical formula for
amino acids
proteins
Carbohydrates (sugar)
aldehydes
DNA and RNA
Carbohydrates (sugar)
- A student observed that a small amount of acetone sprayed on the back of the hand felt very cool compared to a similar amount of water. Your explanation of this phenomena be that
all organic compound do this
acetone has a lower viscosity and transfers heat quanta better
water has a higher heat capacity than acetone, therefore retaining more heat
the higher vapor pressure of acetone results in more rapid evaporation and heat loss
the observed effect is not real and is only imagined
the higher vapor pressure of acetone results in more rapid evaporation and heat loss
- When a pot of water boils on the stove, small bubbles form at the bottom of the pan and rise to the surface. What is inside these bubbles?
steam
hydrogen gas
oxygen gas
a vacuum
air
steam
