Lewis acids and bases are most closely associated with which process?
answer
electron transfer
question
What is the definition of a Lewis base?
answer
a substance that donates electrons to form a covalent bond
question
Which of the following substances is an Arrhenius acid?
answer
HCN
question
Consider the reaction below.
NH4+ + H2O --> NH3 + H3O+
Which is an acid-conjugate base pair?
answer
NH4+ and H3O+
question
Which is a characteristic of a Lewis base?
answer
It behaves as the electron donor.
question
What is the Bronsted-Lowry definition of an acid?
answer
a compound that donates protons
question
What is the Arrhenius definition of an acid?
answer
A substance that increases H3O+ concentration when it is dissolved in water.
question
What is the Bronsted-Lowry definition of a base?
answer
a compound that accepts protons
question
Consider the reaction below.
HClO3 + NH3 --> NH4+ + ClO3-
Which is a base-conjugate acid pair?
answer
NH3 and NH4+
question
Consider the reaction below.
H2PO4- + H2O --> H3O+ + HPO42-
Which of the following is a base-conjugate acid pair?
answer
H2O and H3O+
question
Which reaction displays an example of an Arrhenius base?
answer
NaOH(s) --> Na+(aq) + OH-(aq)
question
Which term describes a substance that increases the concentration of hydroxide ions in solution?
answer
Arrhenius definition of a base
question
What is the definition of a Lewis acid?
answer
a substance that accepts electrons to form a covalent bond
question
Which best describes the definition of Lewis acids and bases?
answer
a general definition based on electron structure
question
Which statement best describes a Bronsted-Lowry base?
answer
It must accept protons to form a conjugate acid.
question
Consider the reaction below.
HF + H2O --> H3O+ + F-
Which is an acid-conjugate base pair?
answer
HF and F-
question
Which statement describes the Arrhenius interpretation of acids and bases?
answer
It is limited to situations that involve aqueous solutions or specific compounds.
question
Consider the reaction below.
HI + H2O --> H3O+ + I-
Which is an acid-conjugate base pair?
answer
HI and I-
question
A chemist lectures about the following definition for acids and bases.
The acid-base behavior is analyzed in terms of how electrons are transferred between compounds rather than in terms of how hydrogen ions are transferred.
What is the chemist defining?
answer
the Lewis concept of acids and bases
question
Which of the following would most likely act as a Bronsted-Lowry acid?
answer
HCN
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