Question 1

What is the hydroxide ion concentration of a lye solution that has a pH of 9.20?

Accepted Answer

A)  6.31 × 10-10 M 
B)  1.58 × 10-5 M 
C)  4.80 M 
D)  9.20 M 
A)  6.31 × 10-10 M 
B)  1.58 × 10-5 M 
C)  4.80 M 
D)  9.20 M

Question 2

Identify the base that is in Drano.

Accepted Answer

A)  LiOH 
B)  NaOH 
C)  NaHCO3 
D)  Li2CO3 
E)  NH3 
A)  LiOH 
B)  NaOH 
C)  NaHCO3 
D)  Li2CO3 
E)  NH3

Question 3

Determine the Ka of an acid that has a pH of 4.67 and a concentration of 0.448 M.

Accepted Answer

A)  5.8 × 10-8 
B)  3.3 × 10-11 
C)  9.9 × 10-5 
D)  4.6 × 10-7 
E)  1.0 × 10-9 
A)  5.8 × 10-8 
B)  3.3 × 10-11 
C)  9.9 × 10-5 
D)  4.6 × 10-7 
E)  1.0 × 10-9

Question 4

The stomach excretes ________ to kill microorganisms and to activate enzymes that break down food.

Accepted Answer

A)  CH3COOH 
B)  HBr 
C)  LiHCO3 
D)  HCl 
E)  HNO3 
A)  CH3COOH 
B)  HBr 
C)  LiHCO3 
D)  HCl 
E)  HNO3

Question 5

________ is found in carbonated beverages due to the reaction of carbon dioxide with water.

Accepted Answer

A)  CH3COOH 
B)  H2CO3 
C)  HCOOH 
D)  H3C6H5O7 
E)  CH3CH2COOH 
A)  CH3COOH 
B)  H2CO3 
C)  HCOOH 
D)  H3C6H5O7 
E)  CH3CH2COOH

Question 6

The acid-dissociation constant of hydrocyanic acid (HCN)at 25.0°C is 4.9 × 10-10.What is the pH of an aqueous solution of 0.040 M sodium cyanide (NaCN)?

Accepted Answer

A)  10.96 
B)  3.04 
C)  9.0 × 10-4 
D)  1.1 × 10-11 
E)  2.0 × 10-11 
A)  10.96 
B)  3.04 
C)  9.0 × 10-4 
D)  1.1 × 10-11 
E)  2.0 × 10-11

Question 7

Which of the following acids will have the strongest conjugate base?

Accepted Answer

A)  HCl 
B)  HClO4 
C)  HNO3 
D)  HCN 
E)  HI 
A)  HCl 
B)  HClO4 
C)  HNO3 
D)  HCN 
E)  HI

Question 8

Identify the acid that is in vinegar.

Accepted Answer

A)  H2SO4 
B)  HNO3 
C)  Li2CO3 
D)  CH3COOH 
E)  HF 
A)  H2SO4 
B)  HNO3 
C)  Li2CO3 
D)  CH3COOH 
E)  HF

Question 9

Calculate the hydronium ion concentration in an aqueous solution with a pOH of 4.33 at 25°C.

Accepted Answer

A)  2.1 × 10-10 M 
B)  9.7 × 10-10 M 
C)  4.7 × 10-5 M 
D)  3.8 × 10-5 M 
E)  6.3 × 10-6 M 
A)  2.1 × 10-10 M 
B)  9.7 × 10-10 M 
C)  4.7 × 10-5 M 
D)  3.8 × 10-5 M 
E)  6.3 × 10-6 M

Question 10

A Lewis acid

Accepted Answer

A)  donates electrons. 
B)  accepts electrons. 
C)  donates a proton. 
D)  accepts a proton. 
E)  donates more than one proton. 
A)  donates electrons. 
B)  accepts electrons. 
C)  donates a proton. 
D)  accepts a proton. 
E)  donates more than one proton.

Question 11

Which one of the following salts,when dissolved in water,produces the solution with a pH closest to 7.00?

Accepted Answer

A)  NH4I  
B)  Na2O 
C)  KHCO3   
D)  Cs Cl 
A)  NH4I  
B)  Na2O 
C)  KHCO3   
D)  Cs Cl

Question 12

What is the pH of a 0.50 M H2Se solution that has the stepwise dissociation constants Ka1 = 1.3 × 10-4 and

Accepted Answer

A)  2.09 
B)  3.89 
C)  4.19 
D)  5.57 
A)  2.09 
B)  3.89 
C)  4.19 
D)  5.57

Question 13

All of the following anions are considered basic EXCEPT

Accepted Answer

A)  F-. 
B)  CN-. 
C)  PO43-. 
D)  HPO42-. 
E)  Cl-. 
A)  F-. 
B)  CN-. 
C)  PO43-. 
D)  HPO42-. 
E)  Cl-.

Question 14

What is the hydroxide ion concentration and the pH for a hydrochloric acid solution that has a hydronium ion concentration of

Accepted Answer

A)  6.67 × 10-10 M, 4.82 
B)  6.67 × 10-10 M, 9.18 
C)  6.67 × 10-11 M, 3.82 
D)  6.67 × 10-11 M, 10.18 
A)  6.67 × 10-10 M, 4.82 
B)  6.67 × 10-10 M, 9.18 
C)  6.67 × 10-11 M, 3.82 
D)  6.67 × 10-11 M, 10.18

Question 15

Determine the Kb for CN⁻ at 25°C.The Ka for HCN is 4.9 × 10-10.

Accepted Answer

A)  4.9 × 10-14 
B)  2.3 × 10-9 
C)  1.4 × 10-5 
D)  2.0 × 10-5 
E)  3.7 × 10-7 
A)  4.9 × 10-14 
B)  2.3 × 10-9 
C)  1.4 × 10-5 
D)  2.0 × 10-5 
E)  3.7 × 10-7

Question 16

Identify the acid that is in car batteries.

Accepted Answer

A)  H2SO4 
B)  HNO3 
C)  H2CO3 
D)  CH3COOH 
E)  HCl 
A)  H2SO4 
B)  HNO3 
C)  H2CO3 
D)  CH3COOH 
E)  HCl

Question 17

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

Accepted Answer

A)  NaI 
B)  KI 
C)  MgI2 
D)  AlI3 
A)  NaI 
B)  KI 
C)  MgI2 
D)  AlI3

Question 18

The pH of an aqueous solution at 25.0°C is 10.20.What is the molarity of H+ in this solution?

Accepted Answer

A)  6.3 × 10-11 
B)  1.6 × 10-4 
C)  3.3 
D)  1.0 × 10-13 
E)  1.6 × 1010 
A)  6.3 × 10-11 
B)  1.6 × 10-4 
C)  3.3 
D)  1.0 × 10-13 
E)  1.6 × 1010

Question 19

A container of orange juice at 25°C has a hydronium concentration of 1.78 × 10-3M.What is the pH of the juice?

Accepted Answer

A)  1.84 
B)  3.31 
C)  2.75 
D)  11.25 
E)  7.00 
A)  1.84 
B)  3.31 
C)  2.75 
D)  11.25 
E)  7.00

Question 20

Determine the [OH⁻] concentration in a 0.169 M Ca(OH)2 solution.

Accepted Answer

A)  0.338 M 
B)  0.169 M 
C)  5.92 × 10-14 M 
D)  2.96 × 10-14 M 
E)  0.298 M 
A)  0.338 M 
B)  0.169 M 
C)  5.92 × 10-14 M 
D)  2.96 × 10-14 M 
E)  0.298 M

Exam 17: Acids and Bases

What is the hydroxide ion concentration of a lye solution that has a pH of 9.20?

Identify the base that is in Drano.

Determine the Ka of an acid that has a pH of 4.67 and a concentration of 0.448 M.

The stomach excretes ________ to kill microorganisms and to activate enzymes that break down food.

________ is found in carbonated beverages due to the reaction of carbon dioxide with water.

The acid-dissociation constant of hydrocyanic acid (HCN)at 25.0°C is 4.9 × 10-10.What is the pH of an aqueous solution of 0.040 M sodium cyanide (NaCN)?

Which of the following acids will have the strongest conjugate base?

Identify the acid that is in vinegar.

Calculate the hydronium ion concentration in an aqueous solution with a pOH of 4.33 at 25°C.

A Lewis acid

Which one of the following salts,when dissolved in water,produces the solution with a pH closest to 7.00?

What is the pH of a 0.50 M H2Se solution that has the stepwise dissociation constants Ka1 = 1.3 × 10-4 and

All of the following anions are considered basic EXCEPT

What is the hydroxide ion concentration and the pH for a hydrochloric acid solution that has a hydronium ion concentration of

Determine the Kb for CN⁻ at 25°C.The Ka for HCN is 4.9 × 10-10.

Identify the acid that is in car batteries.

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

The pH of an aqueous solution at 25.0°C is 10.20.What is the molarity of H+ in this solution?

A container of orange juice at 25°C has a hydronium concentration of 1.78 × 10-3M.What is the pH of the juice?

Determine the [OH⁻] concentration in a 0.169 M Ca(OH)2 solution.

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

Determine the K_a of an acid that has a pH of 4.67 and a concentration of 0.448 M.

The acid-dissociation constant of hydrocyanic acid (HCN)at 25.0°C is 4.9 × 10^-10.What is the pH of an aqueous solution of 0.040 M sodium cyanide (NaCN)?

What is the pH of a 0.50 M H₂Se solution that has the stepwise dissociation constants K_a1 = 1.3 × 10^-4 and

Determine the K_b for CN⁻ at 25°C.The K_a for HCN is 4.9 × 10^-10.

The pH of an aqueous solution at 25.0°C is 10.20.What is the molarity of H⁺ in this solution?

A container of orange juice at 25°C has a hydronium concentration of 1.78 × 10^-3M.What is the pH of the juice?

Determine the [OH⁻] concentration in a 0.169 M Ca(OH)₂ solution.