Activity 42 - Acids, Bases and Conjugates : Arrhenius and Bronsted Acid Flashcards
What is an Arrhenius Acid?
Compounds that form hydronium ions where they dissociate in aqueous solution
What is an Arrhenius Base?
Compounds that from hydroxide ions in solution
What is a Bronsted Acid?
Molecules or ions that act as “proton donors”
What is a Bronsted Base?
Molecules or ions that act as “proton acceptors”
Ba(OH)₂ is a Brønsted-Lowry base because __________.
A) It is a polar molecule
B) It is a hydroxide donor
C) It is a proton acceptor
D) It can dissolve in water
C) Proton acceptor
HBr is an Arrhenius acid because
___________.
A) It produces hydronium ions in solution
B) It produces hydroxide ions in solution
C) It is a polar molecule
D) It can dissolve in water
A) Produces hydronium ions
HClO₄ is an Arrhenius acid because ___________.
A) It can dissolve in water
B) It is a polar molecule
C) It produces hydroxide ions in solution
D) It produces hydronium ions in solution
D) Produces hydronium ions
LiOH is a Brønsted-Lowry base because ___________.
A) It is a proton acceptor
B) It is a polar molecule
C) It can dissolve in water
D) It is a hydroxide donor
A) Proton acceptor
The conjugate acid of HSO₃⁻ is
________.
D)
The conjugate base of HCO₃⁻ iS
________.
C)
The conjugate acid of H₂PO₃⁻ is ________.
A)
The conjugate base of HS⁻ is
________.
A)
Which of the following is a conjugate acid-base pair?
A)
Consider the reaction below. Which species are the Brønsted-Lowry acids?
HCN(aq) + CH₃NH₂(aq) ⇌ CH₃NH₃⁺(aq) + CN⁻(aq)
D)
Consider the reaction below. Which species are the Brønsted-Lowry acids?
HCN(aq) + NH₃(aq) ⇌ NH₄⁺(aq) + CN⁻(aq)
A)
Write the formula of the conjugate acid of CH₃CH₂O⁻.
CH3CH3O
- No negative sign
Write the formula of the conjugate acid of HCO₂⁻.
H2CO2
Write the formula of the conjugate acid of the Brønsted-Lowry base, (CH₃)₂NH
(CH3)2 NH2 +
Write the formula of the conjugate acid of the Brønsted-Lowry base, (CH₃)₂NH
(CH3)2 NH2 +
Write the formula of the conjugate base of CH₃CO₂H.
CH3CO2-
How do you predict which compound has a stronger acid?
Stronger acid has a highest value of K
