An acid is a hydrogen ion (proton) donor.
A base is a hydrogen ion (proton) donor.
A theory stating that, in an aqueous solution, an acid is a substance that produces hydrogen ions and a base is a substance that produces hydroxide ions.
Bronsted-Lowry Theory of Acids and Bases
Arrhenius Theory of Acids and Bases
According to the Arrhenius theory, bases in aqueous solution
produce H+ (aq)
produce OH- (aq)
accept H+ (aq)
accept OH- (aq)
Which of the following is a base according to the Bronsted-Lowry theory, but not according to the Arrhenius theory?
ammonia, NH3 (aq)
sodium hydroxide, NaOH (aq)
phenol, HC6H5O (aq)
hydrochloric acid, HCl (aq)
A conjugate acid-base pair consists of two entities that
differ by one oxygen atom
differ by one hydrogen ion
neutralize each other in aqueous solution
produce hydroxide ions in solution
Which of the following is the conjugate acid of water?
H2O2 (aq)
OH- (aq)
HCHO2 (aq)
H3O+ (aq)
Which of the following is a property of a strong acid?
Ka is small.
It exists primarily in the form of molecules in solution.
It ionizes completely in aqueous solution.
Its ionization equilibrium lies far to the left.
Able to donate or accept a hydrogen ion (proton) and thus act as both a Bronsted-Lowry acid and a Bronsted-Lowry base
amphiprotic
indicators
polyprotic
electrolytes
Which of the following best describes the components of a buffer solution?
a weak acid an a strong base in water
a weak acid and its conjugate base in water
a strong acid and a weak base in water
a neutral salt in water
Which of the following statements correctly describes the process of titration?
The titrant is added slowly from a burette into the sample until the equivalence point is observed.
The sample is added slowly from a burette into the titrant until the equivalence point is observed.
The sample is added slowly from a burette into the titrant until the endpoint is observed.
The titrant is added slowly from a burette into the sample until the endpoint is observed.
Which of the following may affect the value of K for an equilibrium reaction?
reaction temperature
whether the reaction is endothermic or exothermic
initial concentration of reactants
all of the above
The value of the equilibrium constant for a reaction allows us to predict
the speed of the reaction
the tendency for the reaction to produce products
the temperature at which the reaction will take place
the concentrations of the reactants and products
To which of the follwing types of reaction do we apply Le Chatelier's principle?
reversible reactions
all reactions at equilibrium
precipitation reactions
all chemical reactions
Adding energy to an exothermic reaction at equilibrium
causes a decrease in the concentration of the reactants
causes a decrease in the concentration of the products
does not affect the system
causes an increase in the concentration of the products
Which of the following quantities is calculated to predict in which direction an equilibrium will shift?
K forward
K reverse
Q
K
Which of the following is a base?
NaOH (aq)
NH3 (aq)
sodium hypochlorite, NaClO
Which of the following statements is true for acids?
they taste bitter
they feel slippery
they turn blue litmus pink
Which of the following terms describes substances that are capable of behaving as either an acid or a base?
diprotic
electrolytic
conjugate
Which of the following compounds is an example of an oxyacid?
HF (aq)
HCl (aq)
HClO3 (aq)
HCN (aq)
Oxyacid - an acid in which the acidic hydrogen atom is attached to an oxygen atom
Which of the following statements correctly describes strong bases?
They completely dissociate in water to produce hydrogen ions.
They completely dissociate in water to produce hydroxide ions.
They only partially dissociate in water to produce hydroxide ions.
They only partially dissociate in water to produce hydrogen ions.
Which of the following substances would make the best electrolyte?
a strong acid
a weak acid
a weak base
an organic acid
