CHEM 104 EXAM 9 ACTUAL TEST PAPER QUESTIONS CORRECT ANSWERS GRADED A
PLUS
CHEM 104 Exam 9 Questions and Answers Verified
Solutions Latest Update 2026/2027
Question:
A base is a proton _____________?
Answer:
Acceptor Acid ionization involves what? -✓✓The donation of an acidic proton to water to produce
hydronium ions Which of these would be considered acid ionization? A.
H2O+NH-2■--■OH-+NH3 B. H2O+H2PO-4■--■H3PO4+OH- C. CN-+H2O■--■OH-+HCN D.
PH+4+H2O■--■PH3+H3O+ -✓✓D Term for a substance able to act as either an acid or a base by
any definition - ✓✓Amphoteric According to the 2nd law of thermodynamics the ______________
of a closed system never decreases -✓✓Entropy A measure of a solution concentration defined as
nsolute/Vsolution is called the - ✓✓Molarity The units of the rate of a chemical reaction are
-✓✓M/s The time required for a reactant to decrease to half of its original concentration is called a
-✓✓Half life The arrhenius equation specifies the _____________ dependence on the rate of a
constant -✓✓Temperature The notion that at equilibrium the rate of forward reaction equals that of
the reverse reaction is called _________Equilibrium -✓✓dynamic The equation giving the
concentration of an equilibrium is the law of _________ _____________ -✓✓Mass action Le
Chatelier's principle states that a chemical system at equilibrium _________ an imposed change
-✓✓Counteracts In the context of the bronsted-lowry definition a base is a -✓✓proton acceptor At
25 ' C the ion product of water (KW) has the value of 10 -✓✓1.0x10-14 The Hydronium ions is the
___________ _____________ of water -✓✓conjugate acid The hydroxide ions are the__________
__________ of water -✓✓conjugate base The criterion of a weak base is that it is __________
dissociated in water -✓✓partially the criterion for a strong acid is that it is ______________
dissociated in water - ✓✓Completely Examples of strong acids -✓✓HCL, HBr, HI, HNO3, HCLO4,
H2SO4 Examples of weak acids -✓✓HF, ACOH, CH3COOH, H2SO4 The acid ionization constant
of Ka is a measure of ___________ _______________ - ✓✓Acid strength Equilibrium constants
change with _____________ -✓✓Temperature Due to the hydrolysis of a solution NH4L is madly
-✓✓Acidic In pure water at 25 ' C the value of [OH-(aq)} is ________ -✓✓1.0 x 10^-7 A lewis acid
is defined as a ____________ _____________ -✓✓Electron pair acceptor As T decreases, the
solubility of salts in water generally? A. Increase B. Stays constant C. Decreases -✓✓C. Decreases`
Molality is a measure of concentration (of x) defined as A. nx/msolvent B. nx/Vsolution C.
nx/msolution D. mx/Vsolution E. nx/nsolvent -✓✓A. nx/msolvent The osmotic pressure of a
solution of a nonvolatile solute is given by A. n =i m Kp B. Psoln = Xsolvent x Po Solvent C. Pvap=
-log(Po) D. n = i M R T E. PV = nRT -✓✓D. n = i M R T Which of the following rate laws overall
third order? A. rate = k [A] B. rate = k[A][B] C. rte = [A]^2 [B][C] D. rate = [A][B]^2 -✓✓D For a
first order reaction A-> B with k = 3.7 what is the half-life? A. 1.31 s B. 1.85 s C. 0.19 s D.0693 E.
PLUS
CHEM 104 Exam 9 Questions and Answers Verified
Solutions Latest Update 2026/2027
Question:
A base is a proton _____________?
Answer:
Acceptor Acid ionization involves what? -✓✓The donation of an acidic proton to water to produce
hydronium ions Which of these would be considered acid ionization? A.
H2O+NH-2■--■OH-+NH3 B. H2O+H2PO-4■--■H3PO4+OH- C. CN-+H2O■--■OH-+HCN D.
PH+4+H2O■--■PH3+H3O+ -✓✓D Term for a substance able to act as either an acid or a base by
any definition - ✓✓Amphoteric According to the 2nd law of thermodynamics the ______________
of a closed system never decreases -✓✓Entropy A measure of a solution concentration defined as
nsolute/Vsolution is called the - ✓✓Molarity The units of the rate of a chemical reaction are
-✓✓M/s The time required for a reactant to decrease to half of its original concentration is called a
-✓✓Half life The arrhenius equation specifies the _____________ dependence on the rate of a
constant -✓✓Temperature The notion that at equilibrium the rate of forward reaction equals that of
the reverse reaction is called _________Equilibrium -✓✓dynamic The equation giving the
concentration of an equilibrium is the law of _________ _____________ -✓✓Mass action Le
Chatelier's principle states that a chemical system at equilibrium _________ an imposed change
-✓✓Counteracts In the context of the bronsted-lowry definition a base is a -✓✓proton acceptor At
25 ' C the ion product of water (KW) has the value of 10 -✓✓1.0x10-14 The Hydronium ions is the
___________ _____________ of water -✓✓conjugate acid The hydroxide ions are the__________
__________ of water -✓✓conjugate base The criterion of a weak base is that it is __________
dissociated in water -✓✓partially the criterion for a strong acid is that it is ______________
dissociated in water - ✓✓Completely Examples of strong acids -✓✓HCL, HBr, HI, HNO3, HCLO4,
H2SO4 Examples of weak acids -✓✓HF, ACOH, CH3COOH, H2SO4 The acid ionization constant
of Ka is a measure of ___________ _______________ - ✓✓Acid strength Equilibrium constants
change with _____________ -✓✓Temperature Due to the hydrolysis of a solution NH4L is madly
-✓✓Acidic In pure water at 25 ' C the value of [OH-(aq)} is ________ -✓✓1.0 x 10^-7 A lewis acid
is defined as a ____________ _____________ -✓✓Electron pair acceptor As T decreases, the
solubility of salts in water generally? A. Increase B. Stays constant C. Decreases -✓✓C. Decreases`
Molality is a measure of concentration (of x) defined as A. nx/msolvent B. nx/Vsolution C.
nx/msolution D. mx/Vsolution E. nx/nsolvent -✓✓A. nx/msolvent The osmotic pressure of a
solution of a nonvolatile solute is given by A. n =i m Kp B. Psoln = Xsolvent x Po Solvent C. Pvap=
-log(Po) D. n = i M R T E. PV = nRT -✓✓D. n = i M R T Which of the following rate laws overall
third order? A. rate = k [A] B. rate = k[A][B] C. rte = [A]^2 [B][C] D. rate = [A][B]^2 -✓✓D For a
first order reaction A-> B with k = 3.7 what is the half-life? A. 1.31 s B. 1.85 s C. 0.19 s D.0693 E.
