CHEM 104 EXAM 2 WITH ACTUAL
CORRECT QUESTIONS AND
VERIFIED DETAILED ANSWERS
ALREADY GRADED A+
GUARANTEED PASS
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 ___________ _______________
CORRECT QUESTIONS AND
VERIFIED DETAILED ANSWERS
ALREADY GRADED A+
GUARANTEED PASS
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 ___________ _______________
