Question 1

Which one of the following will form a basic solution in water?

Accepted Answer

A)  NaC2H3O2 
B)  LiCN 
C)  KClO2 
D)  LiBrO 
E)  All of the above will form basic solutions. 
A)  NaC2H3O2 
B)  LiCN 
C)  KClO2 
D)  LiBrO 
E)  All of the above will form basic solutions.

Question 2

Calculate the pOH of a solution that contains 7.8 × 10-6 M OH⁻ at 25°C.

Accepted Answer

A)  1.28 
B)  5.11 
C)  12.72 
D)  8.89 
E)  9.64 
A)  1.28 
B)  5.11 
C)  12.72 
D)  8.89 
E)  9.64

Question 3

Which of the following is a strong acid?

Accepted Answer

A)  C6H5CO2H 
B)  HF 
C)  HI  
D)  NH4+ 
E)  H2O 
A)  C6H5CO2H 
B)  HF 
C)  HI  
D)  NH4+ 
E)  H2O

Question 4

Match between columns
                        Premises: Brønsted-Lowry base
Arrhenius base
Lewis acid
Arrhenius acid
Brønsted-Lowry acid
Lewis base

Accepted Answer

The Answer of proton donor and produces hydroxide ions in is...

Question 5

Calculate the hydronium ion concentration in an aqueous solution with a pOH of 9.85 at 25°C.

Accepted Answer

A)  7.1 × 10-5 M 
B)  4.2 × 10-10 M 
C)  8.7 × 10-10 M 
D)  6.5 × 10-5 M 
E)  1.4 × 10-10 M 
A)  7.1 × 10-5 M 
B)  4.2 × 10-10 M 
C)  8.7 × 10-10 M 
D)  6.5 × 10-5 M 
E)  1.4 × 10-10 M

Question 6

Which of the following is a Lewis base?

Accepted Answer

A)  AlCl3 
B)  H2O 
C)  SiCl4 
D)  C5H12 
E)  None of the above are Lewis bases. 
A)  AlCl3 
B)  H2O 
C)  SiCl4 
D)  C5H12 
E)  None of the above are Lewis bases.

Question 7

Which of the following is TRUE?

Accepted Answer

A)  A neutral solution contains [H2O] = [H3O⁺] 
B)  A neutral solution does not contain any H3O+ or OH- 
C)  An acidic solution has [H3O⁺] > [OH⁻] 
D)  A basic solution does not contain H3O+ 
E)  None of the above are true. 
A)  A neutral solution contains [H2O] = [H3O⁺] 
B)  A neutral solution does not contain any H3O+ or OH- 
C)  An acidic solution has [H3O⁺] > [OH⁻] 
D)  A basic solution does not contain H3O+ 
E)  None of the above are true.

Question 8

Calculate the hydronium ion concentration in an aqueous solution that contains 2.50 × 10-4 M in hydroxide ion.

Accepted Answer

A)  4.00 × 10-9 M 
B)  4.00 × 10-10 M 
C)  4.00 × 10-11 M 
D)  5.00 × 10-11 M 
A)  4.00 × 10-9 M 
B)  4.00 × 10-10 M 
C)  4.00 × 10-11 M 
D)  5.00 × 10-11 M

Question 9

Determine the pOH in a 0.235 M NaOH solution.

Accepted Answer

A)  13.76 
B)  0.24 
C)  13.37 
D)  0.63 
E)  12 
A)  13.76 
B)  0.24 
C)  13.37 
D)  0.63 
E)  12

Question 10

Identify the weak diprotic acid.

Accepted Answer

A)  HNO3 
B)  H3PO4 
C)  H2SO3 
D)  HClO4 
E)  H2SO4 
A)  HNO3 
B)  H3PO4 
C)  H2SO3 
D)  HClO4 
E)  H2SO4

Question 11

Which one of the following salts,when dissolved in water,produces the solution with the highest pH?

Accepted Answer

A)  KHSO4 
B)  RbClO4 
C)  BaO 
D)  CH3CH3NH3Br 
A)  KHSO4 
B)  RbClO4 
C)  BaO 
D)  CH3CH3NH3Br

Question 12

What is the selenide ion concentration [Se2-] for a 0.300 M H2Se solution that has the stepwise dissociation constants of   and

Accepted Answer

A)  6.2 × 10-3 M 
B)  1.3 × 10-4 M 
C)  3.9 × 10-5 M 
D)  1.0 × 10-11 M 
A)  6.2 × 10-3 M 
B)  1.3 × 10-4 M 
C)  3.9 × 10-5 M 
D)  1.0 × 10-11 M

Question 13

All of the following cations are considered acidic EXCEPT

Accepted Answer

A)  Fe2+ 
B)  Na+ 
C)  Al3+ 
D)  NH4+ 
E)  V2+ 
A)  Fe2+ 
B)  Na+ 
C)  Al3+ 
D)  NH4+ 
E)  V2+

Question 14

Calculate the pH of a 0.800 M KBrO solution.Ka for hypobromous acid,HBrO,is 2.0 × 10-9.

Accepted Answer

A)  2.70 
B)  4.40 
C)  9.60 
D)  11.30 
A)  2.70 
B)  4.40 
C)  9.60 
D)  11.30

Question 15

Determine the pOH in a 2.58 × 10-3 M KOH solution.

Accepted Answer

A)  11.4 
B)  2.59 
C)  9.33 
D)  4.67 
E)  7.00 
A)  11.4 
B)  2.59 
C)  9.33 
D)  4.67 
E)  7.00

Question 16

Determine the pOH of a 0.188 M NH3 solution at 25°C.The Kb of NH3 is 1.76 × 10-5.

Accepted Answer

A)  5.480 
B)  2.740 
C)  8.520 
D)  11.260 
E)  12.656 
A)  5.480 
B)  2.740 
C)  8.520 
D)  11.260 
E)  12.656

Question 17

Determine the pH of a 0.441 M NaOH solution at 25°C.

Accepted Answer

A)  0.356 
B)  13.64 
C)  0.441 
D)  13.56 
E)  0.88 
A)  0.356 
B)  13.64 
C)  0.441 
D)  13.56 
E)  0.88

Question 18

Which of the following is an Arrhenius base?

Accepted Answer

A)  CH3CO2H 
B)  KOH 
C)  CH3OH 
D)  Na F 
E)  More than one of these compounds is an Arrhenius base. 
A)  CH3CO2H 
B)  KOH 
C)  CH3OH 
D)  Na F 
E)  More than one of these compounds is an Arrhenius base.

Question 19

Calculate the pH of a solution that contains 7.8 × 10-6 M OH⁻ at 25°C.

Accepted Answer

A)  1.28 
B)  5.11 
C)  12.72 
D)  8.89 
E)  9.64 
A)  1.28 
B)  5.11 
C)  12.72 
D)  8.89 
E)  9.64

Question 20

Determine the pOH of a 0.141 M RbOH solution at 25°C.

Accepted Answer

A)  0.851 
B)  13.15 
C)  0.141 
D)  13.86 
E)  0.28 
A)  0.851 
B)  13.15 
C)  0.141 
D)  13.86 
E)  0.28

Exam 17: Acids and Bases

Which one of the following will form a basic solution in water?

Calculate the pOH of a solution that contains 7.8 × 10-6 M OH⁻ at 25°C.

Which of the following is a strong acid?

Calculate the hydronium ion concentration in an aqueous solution with a pOH of 9.85 at 25°C.

Which of the following is a Lewis base?

Which of the following is TRUE?

Calculate the hydronium ion concentration in an aqueous solution that contains 2.50 × 10-4 M in hydroxide ion.

Determine the pOH in a 0.235 M NaOH solution.

Identify the weak diprotic acid.

Which one of the following salts,when dissolved in water,produces the solution with the highest pH?

What is the selenide ion concentration [Se2-] for a 0.300 M H2Se solution that has the stepwise dissociation constants of and

All of the following cations are considered acidic EXCEPT

Calculate the pH of a 0.800 M KBrO solution.Ka for hypobromous acid,HBrO,is 2.0 × 10-9.

Determine the pOH in a 2.58 × 10-3 M KOH solution.

Determine the pOH of a 0.188 M NH3 solution at 25°C.The Kb of NH3 is 1.76 × 10-5.

Determine the pH of a 0.441 M NaOH solution at 25°C.

Which of the following is an Arrhenius base?

Calculate the pH of a solution that contains 7.8 × 10-6 M OH⁻ at 25°C.

Determine the pOH of a 0.141 M RbOH solution at 25°C.

Essentials: Units, Measurements, and Problem Solving

Atoms

The Quantum Mechanical Model of the Atom

Periodic Properties of the Elements

Molecules and Compounds

Chemical Bonding I

Chemical Bonding Ii

Chemical Reactions and Chemical Quantities

Introduction to Solutions and Aqueous Reactions

Thermochemistry

Gases

Liquids, Solids, and Intermolecular Forces

Crystalline Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Transition Metals and Coordination Compounds

Filters

Calculate the pOH of a solution that contains 7.8 × 10^-6 M OH⁻ at 25°C.

Calculate the hydronium ion concentration in an aqueous solution that contains 2.50 × 10^-⁴ M in hydroxide ion.

What is the selenide ion concentration [Se^2-] for a 0.300 M H₂Se solution that has the stepwise dissociation constants of and

Calculate the pH of a 0.800 M KBrO solution.K_a for hypobromous acid,HBrO,is 2.0 × 10^-9.

Determine the pOH in a 2.58 × 10^-3 M KOH solution.

Determine the pOH of a 0.188 M NH₃ solution at 25°C.The K_bof NH₃ is 1.76 × 10^-5.

Calculate the pH of a solution that contains 7.8 × 10^-6 M OH⁻ at 25°C.