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chemistry ch 18 exam 3 Questions
and Answers (100% Correct
Answers) Already Graded A+
arrhenius acid Ans: substance with H in its formula that yields
H+
© 2026 Assignment
arrhenius base Ans: substance with OH^- in its formula that
yields OH^-
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Bronsted acid Ans: proton donor, donates H+
Bronsted base Ans: proton acceptor, accepts H+
-must contain a lone pair of electrons to bind to the H+
acid-base reaction Ans: one species donates a proton, and
another species simulatenously accepts the proton
H2O is ___ Ans: amphiprotic: acts as an acid or base
Bronsted lowry acid-base run Ans: an acid and base react to
form their conjugate base and acid
net direction of acid-base reactions Ans: reaction proceeds in
direction in which a stronger acid and base form weaker acids
and bases
a weaker acid has a _____ conjugate base. Ans: stronger
, 2
Kc>1 Ans: rxn to right (product favored)
Kc<1 Ans: rxn to left (reactant favored)
auto ionization Ans: since water is amphiprotic, it dissociates
slightly into ions as H2O molecules react slightly with each
other
increase in concentration of H3O+ causes OH- concentration to
____ Ans: decrease
© 2026 Assignment
when acid is added Ans: H3O+ increases, OH- decreases
Guru01 - Stuvia
Expert
when base is added Ans: OH- increases, H3O+ decreases
the higher the pH, the ___ the concentration of H3O+ Ans:
lower
hydrohalic acids Ans: HCl, HBr, HI
oxoacids Ans: number of oxygen is greater than the number of
ionizable protons by 2 or more
-HNO3, H2SO4, HClO4
weak acids are ___ electrolytes Ans: weak
in a weak acid solution: Ans: -HA at equilibrium = HA initial
-H3O+=A-
-very small Kc
chemistry ch 18 exam 3 Questions
and Answers (100% Correct
Answers) Already Graded A+
arrhenius acid Ans: substance with H in its formula that yields
H+
© 2026 Assignment
arrhenius base Ans: substance with OH^- in its formula that
yields OH^-
Guru01 - Stuvia
Expert
Bronsted acid Ans: proton donor, donates H+
Bronsted base Ans: proton acceptor, accepts H+
-must contain a lone pair of electrons to bind to the H+
acid-base reaction Ans: one species donates a proton, and
another species simulatenously accepts the proton
H2O is ___ Ans: amphiprotic: acts as an acid or base
Bronsted lowry acid-base run Ans: an acid and base react to
form their conjugate base and acid
net direction of acid-base reactions Ans: reaction proceeds in
direction in which a stronger acid and base form weaker acids
and bases
a weaker acid has a _____ conjugate base. Ans: stronger
, 2
Kc>1 Ans: rxn to right (product favored)
Kc<1 Ans: rxn to left (reactant favored)
auto ionization Ans: since water is amphiprotic, it dissociates
slightly into ions as H2O molecules react slightly with each
other
increase in concentration of H3O+ causes OH- concentration to
____ Ans: decrease
© 2026 Assignment
when acid is added Ans: H3O+ increases, OH- decreases
Guru01 - Stuvia
Expert
when base is added Ans: OH- increases, H3O+ decreases
the higher the pH, the ___ the concentration of H3O+ Ans:
lower
hydrohalic acids Ans: HCl, HBr, HI
oxoacids Ans: number of oxygen is greater than the number of
ionizable protons by 2 or more
-HNO3, H2SO4, HClO4
weak acids are ___ electrolytes Ans: weak
in a weak acid solution: Ans: -HA at equilibrium = HA initial
-H3O+=A-
-very small Kc
