Chem 104 Exam 2 Questions With
Correct Answers
A acid is a proton _______________? - CORRECT ANSWER✔✔-Donator
| | | | | | | |
A base is a proton _____________? - CORRECT ANSWER✔✔-Acceptor
| | | | | | | |
Acid ionization involves what ? - CORRECT ANSWER✔✔-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+ - CORRECT ANSWER✔✔-D
| | | |
,Term for a substance able to act as either an acid or a base by any
| | | | | | | | | | | | | | | |
definition - CORRECT ANSWER✔✔-Amphoteric | | |
According to the 2nd law of thermodynamics the ______________ of a
| | | | | | | | | | |
closed system never decreases - CORRECT ANSWER✔✔-Entropy
| | | | | |
A measure of a solution concentration defined as nsolute/Vsolution is
| | | | | | | | | |
called the - CORRECT ANSWER✔✔-Molarity
| | | |
The units of the rate of a chemical reaction are - CORRECT ANSWER✔✔-
| | | | | | | | | | | |
M/s
The time required for a reactant to decrease to half of its original
| | | | | | | | | | | | |
concentration is called a - CORRECT ANSWER✔✔-Half life | | | | | | |
The arrhenius equation specifies the _____________ dependence on
| | | | | | | |
the rate of a constant - CORRECT ANSWER✔✔-Temperature
| | | | | | |
The notion that at equilibrium the rate of forward reaction equals that
| | | | | | | | | | | |
of the reverse reaction is called _________Equilibrium - CORRECT
| | | | | | | | |
ANSWER✔✔-dynamic
The equation giving the concentration of an equilibrium is the law of
| | | | | | | | | | | |
_________ _____________ - CORRECT ANSWER✔✔-Mass action | | | | |
, Le Chatelier's principle states that a chemical system at equilibrium
| | | | | | | | | |
_________ an imposed change - CORRECT ANSWER✔✔-Counteracts
| | | | | |
In the context of the bronsted-lowry definition a base is a - CORRECT
| | | | | | | | | | | | |
ANSWER✔✔-proton acceptor |
At 25 ' C the ion product of water (KW) has the value of 10 - CORRECT
| | | | | | | | | | | | | | | | |
ANSWER✔✔-1.0x10-14
The Hydronium ions is the ___________ _____________ of water -
| | | | | | | | | |
CORRECT ANSWER✔✔-conjugate acid | |
The hydroxide ions are the__________ __________ of water - CORRECT
| | | | | | | | | |
ANSWER✔✔-conjugate base |
The criterion of a weak base is that it is __________ dissociated in water
| | | | | | | | | | | | |
- CORRECT ANSWER✔✔-partially
| | |
the criterion for a strong acid is that it is ______________ dissociated in
| | | | | | | | | | | | |
water - CORRECT ANSWER✔✔-Completely
| | |
Correct Answers
A acid is a proton _______________? - CORRECT ANSWER✔✔-Donator
| | | | | | | |
A base is a proton _____________? - CORRECT ANSWER✔✔-Acceptor
| | | | | | | |
Acid ionization involves what ? - CORRECT ANSWER✔✔-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+ - CORRECT ANSWER✔✔-D
| | | |
,Term for a substance able to act as either an acid or a base by any
| | | | | | | | | | | | | | | |
definition - CORRECT ANSWER✔✔-Amphoteric | | |
According to the 2nd law of thermodynamics the ______________ of a
| | | | | | | | | | |
closed system never decreases - CORRECT ANSWER✔✔-Entropy
| | | | | |
A measure of a solution concentration defined as nsolute/Vsolution is
| | | | | | | | | |
called the - CORRECT ANSWER✔✔-Molarity
| | | |
The units of the rate of a chemical reaction are - CORRECT ANSWER✔✔-
| | | | | | | | | | | |
M/s
The time required for a reactant to decrease to half of its original
| | | | | | | | | | | | |
concentration is called a - CORRECT ANSWER✔✔-Half life | | | | | | |
The arrhenius equation specifies the _____________ dependence on
| | | | | | | |
the rate of a constant - CORRECT ANSWER✔✔-Temperature
| | | | | | |
The notion that at equilibrium the rate of forward reaction equals that
| | | | | | | | | | | |
of the reverse reaction is called _________Equilibrium - CORRECT
| | | | | | | | |
ANSWER✔✔-dynamic
The equation giving the concentration of an equilibrium is the law of
| | | | | | | | | | | |
_________ _____________ - CORRECT ANSWER✔✔-Mass action | | | | |
, Le Chatelier's principle states that a chemical system at equilibrium
| | | | | | | | | |
_________ an imposed change - CORRECT ANSWER✔✔-Counteracts
| | | | | |
In the context of the bronsted-lowry definition a base is a - CORRECT
| | | | | | | | | | | | |
ANSWER✔✔-proton acceptor |
At 25 ' C the ion product of water (KW) has the value of 10 - CORRECT
| | | | | | | | | | | | | | | | |
ANSWER✔✔-1.0x10-14
The Hydronium ions is the ___________ _____________ of water -
| | | | | | | | | |
CORRECT ANSWER✔✔-conjugate acid | |
The hydroxide ions are the__________ __________ of water - CORRECT
| | | | | | | | | |
ANSWER✔✔-conjugate base |
The criterion of a weak base is that it is __________ dissociated in water
| | | | | | | | | | | | |
- CORRECT ANSWER✔✔-partially
| | |
the criterion for a strong acid is that it is ______________ dissociated in
| | | | | | | | | | | | |
water - CORRECT ANSWER✔✔-Completely
| | |
