4267319
Descripción
Test por Brittany McLaren, actualizado hace más de 1 año
|
Creado por Brittany McLaren
hace casi 9 años
|
|
Pregunta 1
Pregunta
An acid is a hydrogen ion (proton) donor.
Respuesta
- True
- False
Pregunta 2
Pregunta
A base is a hydrogen ion (proton) donor.
Respuesta
- True
- False
Pregunta 3
Pregunta
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.
Respuesta
-
Bronsted-Lowry Theory of Acids and Bases
-
Arrhenius Theory of Acids and Bases
Pregunta 4
Pregunta
According to the Arrhenius theory, bases in aqueous solution
Respuesta
-
produce H+ (aq)
-
produce OH- (aq)
-
accept H+ (aq)
-
accept OH- (aq)
Pregunta 5
Pregunta
Which of the following is a base according to the Bronsted-Lowry theory, but not according to the Arrhenius theory?
Respuesta
-
ammonia, NH3 (aq)
-
sodium hydroxide, NaOH (aq)
-
phenol, HC6H5O (aq)
-
hydrochloric acid, HCl (aq)
Pregunta 6
Pregunta
A conjugate acid-base pair consists of two entities that
Respuesta
-
differ by one oxygen atom
-
differ by one hydrogen ion
-
neutralize each other in aqueous solution
-
produce hydroxide ions in solution
Pregunta 7
Pregunta
Which of the following is the conjugate acid of water?
Respuesta
-
H2O2 (aq)
-
OH- (aq)
-
HCHO2 (aq)
-
H3O+ (aq)
Pregunta 8
Pregunta
Which of the following is a property of a strong acid?
Respuesta
-
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.
Pregunta 9
Pregunta
Able to donate or accept a hydrogen ion (proton) and thus act as both a Bronsted-Lowry acid and a Bronsted-Lowry base
Respuesta
-
amphiprotic
-
indicators
-
polyprotic
-
electrolytes
Pregunta 10
Pregunta
Which of the following best describes the components of a buffer solution?
Respuesta
-
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
Pregunta 11
Pregunta
Which of the following statements correctly describes the process of titration?
Respuesta
-
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.
Pregunta 12
Pregunta
Which of the following may affect the value of K for an equilibrium reaction?
Respuesta
-
reaction temperature
-
whether the reaction is endothermic or exothermic
-
initial concentration of reactants
-
all of the above
Pregunta 13
Pregunta
The value of the equilibrium constant for a reaction allows us to predict
Respuesta
-
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
Pregunta 14
Pregunta
To which of the follwing types of reaction do we apply Le Chatelier's principle?
Respuesta
-
reversible reactions
-
all reactions at equilibrium
-
precipitation reactions
-
all chemical reactions
Pregunta 15
Pregunta
Adding energy to an exothermic reaction at equilibrium
Respuesta
-
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
Pregunta 16
Pregunta
Which of the following quantities is calculated to predict in which direction an equilibrium will shift?
Respuesta
-
K forward
-
K reverse
-
Q
-
K
Pregunta 17
Pregunta
Which of the following is a base?
Respuesta
-
NaOH (aq)
-
NH3 (aq)
-
sodium hypochlorite, NaClO
-
all of the above
Pregunta 18
Pregunta
Which of the following statements is true for acids?
Respuesta
-
they taste bitter
-
they feel slippery
-
they turn blue litmus pink
-
all of the above
Pregunta 19
Pregunta
Which of the following terms describes substances that are capable of behaving as either an acid or a base?
Respuesta
-
diprotic
-
electrolytic
-
amphiprotic
-
conjugate
Pregunta 20
Pregunta
Which of the following compounds is an example of an oxyacid?
Respuesta
-
HF (aq)
-
HCl (aq)
-
HClO3 (aq)
-
HCN (aq)
Pregunta 21
Pregunta
Oxyacid - an acid in which the acidic hydrogen atom is attached to an oxygen atom
Respuesta
- True
- False
Pregunta 22
Pregunta
Which of the following statements correctly describes strong bases?
Respuesta
-
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.
Pregunta 23
Pregunta
Which of the following substances would make the best electrolyte?
Respuesta
-
a strong acid
-
a weak acid
-
a weak base
-
an organic acid
¿Quieres crear tus propios Tests gratis con GoConqr? Más información.