Chemistry 51 - Fundamentals of Chemistry » Fall 2021 » Acids and Bases Review Questions

Need help with your exam preparation?

Existing Quiz Clients Login here
Question #1
Identify the Brønsted-Lowry acids in the following reaction. H2O + CO32- → HCO3- + OH-
A.   CO32-/HCO3-
B.   H2CO3/H2O
C.   CO32-/OH-
D.   H2O/HCO3-
E.   OH-/HCO3-
Question #2
The conjugate base of HClO3 is
A.   ClO3-.
B.   HClO2.
C.   HClO.
D.   Cl(OH)2.
E.   ClO3.
Question #3
Which of the following is correctly identified?
A.   HCl, weak acid
B.   NH3, strong acid
C.   Ca(OH)2, weak base
D.   H2CO3, strong acid
E.   NaOH, strong base
Question #4
Which of the following is the weakest acid?
A.   HCN ( Ka for HCN is 4.9 × 10-10)
B.   H3BO3 ( Ka for H3BO3 is 5.4 × 10-10)
C.   HCNO ( Ka for HCNO is 2 × 10-4)
D.   HF ( Ka for HF is 7.2 × 10-4)
Question #5
The Ka for hydrofluoric acid is 7.2 × 10-4. This means that HF is
A.   a weak acid.
B.   a strong acid.
C.   able to react with HCl.
D.   neutral in water solution.
E.   ionic.
Question #6
Which of the following statements correctly describes the hydronium-hydroxide balance in the given solution?
A.   In bases, [OH-] is less than [ H3O+].
B.   In bases, [OH-] is greater than [ H3O+].
C.   In neutral solutions, [ H3O+] = [ H2O].
D.   In acids, [OH-] is greater than [ H3O+].
E.   In bases, [OH-] = [ H3O+].
Question #7
What is the [OH-] in a solution that has a [ H3O+] = 2.0 × 10-4 M?
A.   2.0 × 10-4 M
B.   5.0 × 10-10 M
C.   5.0 × 10-11 M
D.   1.0 × 10-10 M
E.   2.0 × 10-10 M
Question #8
The name given to an aqueous solution of HBr is
A.   hydrogen bromide.
B.   hypobromous acid.
C.   hydrobromic acid.
D.   bromic acid.
E.   bromous acid.
Question #9
What is the pH of a solution with [ H3O+] = 1 × 10-9 M?
A.   9.0
B.   -9.0
C.     
D.   1.0 × 10-5 M
E.   5.0
F.   -5.0
Question #10
The [ H3O+] of a solution with pH = 2 is
A.   1 × 102 M.
B.   1 × 10-2 M.
C.   -10 M.
D.   1 × 10-12 M.
E.   10 M.
Question #11
Which of the following is the correctly balanced equation for the complete neutralization of H3PO4 with Ca(OH)2?
A.   H3PO4 + Ca(OH)2 → CaHPO4 + 2H2O
B.   4H3PO4 + 6Ca(OH)2 → 2Ca3(PO4)2 + 12H2O
C.   2H3PO4 + 3Ca(OH)2 → Ca3(PO4)2 + 6H2O
D.   3H3PO4 + Ca(OH)2 → Ca3(PO4)2 + 5H2O
E.   H3PO4 + Ca(OH)2 → Ca3(PO4)2+ H2O
Question #12
In a neutralization reaction, how many moles of HClO4 react with 1 mole of Al(OH)3?
A.   3
B.   1
C.   2
D.     
E.   5
F.   4
Question #13
A 25.0 mL sample of H2SO4 requires 20.0 mL of 2.00 M KOH for complete neutralization. What is the molarity of the acid? H2SO4 + 2KOH → K2SO4 + 2H2O
A.   2.00 M
B.   0.800 M
C.     
D.   2.50 M
E.   1.60 M
F.   1.25 M
Question #14
How many milliliters of 0.200 M NaOH are required to completely neutralize 5.00 mL of 0.100 M H3PO4?
A.   15.0 mL
B.   2.50 mL
C.   5.00 mL
D.   0.833 mL
E.   7.50 mL
Question #15
For the problem(s) that follow, consider the reaction in which magnesium reacts with an HCl solution. Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) If 2.00 g of Mg reacts completely with 50.0 mL of HCl solution, what is the molarity of the HCl solution?
A.   3.29 M
B.   8.00 M
C.   1.65 M
D.   0.823 M
E.   80.0 M
Question #16
The function of a buffer is to
A.   change color at the end point of a titration
B.   be a strong base.
C.   maintain the pH of a solution.
D.   maintain a neutral pH.
E.   act as a strong acid.
Question #17
Which one of the following is characteristic of a base?
A.   has a slippery, soapy feel
B.   turns blue litmus red
C.   has a sour taste
D.   produces H3O+ in water
E.   is insoluble in water
Question #18
In a buffer system of HF and its salt, NaF,
A.   the HF neutralizes added base.
B.   the HF is not necessary.
C.   the F- neutralizes added base.
D.   the F- neutralizes added H2O.
E.   the HF neutralizes added acid.
Question #19
Which of the following is a buffer system?
A.   H2O and HCl
B.   H2CO3 and KHCO3
C.   HCl and NaOH
D.   NaCl and NaOH
E.   NaCl and NaNO3
Question #20
Which solution has the highest pH?
A.   a buffer made with 0.10 M acetic acid and 0.01 M sodium acetate
B.   All of the buffers have the same pH since they are all made with acetic acid and sodium acetate.
C.   a buffer made with 0.10 M acetic acid and 0.10 M sodium acetate
D.   a buffer made with 0.01 M acetic acid and 0.10 M sodium acetate
E.   a buffer made with 0.01 M acetic acid and 0.01 M sodium acetate
Question #21
The name of Al(OH)3 is
A.   aluminum trihydroxide.
B.   aluminum(III) hydroxide.
C.   monoaluminum trihydroxide.
D.   aluminum oxygen hydride.
E.   aluminum hydroxide.

Need help with your exam preparation?

Existing Quiz Clients Login here