Question 1

If a saliva specimen has a pH of 7,the solution is which of the following?

Accepted Answer

A) strongly acidic 
B) weakly acidic 
C) neutral 
D) weakly basic 
E) strongly basic 
A) strongly acidic 
B) weakly acidic 
C) neutral 
D) weakly basic 
E) strongly basic

Question 2

A hydrochloric acid solution is 6.00 M and the density is 1.10 g/mL.What is the mass/mass percent concentration of HCl (36.46 g/mol)?

Accepted Answer

A) 0.199% 
B) 0.241% 
C) 19.9% 
D) 21.9% 
E) 24.1% 
A) 0.199% 
B) 0.241% 
C) 19.9% 
D) 21.9% 
E) 24.1%

Question 3

If a drain cleaner has a pH of 14,the solution is which of the following?

Accepted Answer

A) strongly acidic 
B) weakly acidic 
C) neutral 
D) weakly basic 
E) strongly basic 
A) strongly acidic 
B) weakly acidic 
C) neutral 
D) weakly basic 
E) strongly basic

Question 4

What is the term for a solution whose concentration has been established accurately,usually to three or four significant digits?

Accepted Answer

A) normal solution 
B) reference solution 
C) standard solution 
D) stock solution 
E) none of the above 
A) normal solution 
B) reference solution 
C) standard solution 
D) stock solution 
E) none of the above

Question 5

Which of the following is an example of an Arrhenius base?

Accepted Answer

A) KCl(aq) 
B) KOH(aq) 
C) KNO₃(aq) 
D) all of the above 
E) none of the above 
A) KCl(aq) 
B) KOH(aq) 
C) KNO₃(aq) 
D) all of the above 
E) none of the above

Question 6

What is the term for the laboratory procedure of delivering a measured volume of solution through a buret?

Accepted Answer

A) conditioning 
B) standardizing 
C) transferring 
D) titration 
E) none of the above 
A) conditioning 
B) standardizing 
C) transferring 
D) titration 
E) none of the above

Question 7

What is the molarity of a nitric acid solution if 25.00 mL of HNO₃ is required to neutralize 0.500 g of calcium carbonate (100.09 g/mol)? 2 HNO₃(aq)+ CaCO₃(s)→ Ca(NO₃)2(aq)+ H₂O(l)+ CO₂(g)

Accepted Answer

A) 0.200 M 
B) 0.250 M 
C) 0.400 M 
D) 0.500 M 
E) 0.800 M 
A) 0.200 M 
B) 0.250 M 
C) 0.400 M 
D) 0.500 M 
E) 0.800 M

Question 8

What is the term for a substance that releases hydroxide ions in water?

Accepted Answer

A) Arrhenius acid 
B) Arrhenius base 
C) Brønsted-Lowry acid 
D) Brønsted-Lowry base 
E) none of the above 
A) Arrhenius acid 
B) Arrhenius base 
C) Brønsted-Lowry acid 
D) Brønsted-Lowry base 
E) none of the above

Question 9

If an unknown solution is a poor conductor of electricity,which of the following must be true?

Accepted Answer

A) The solution is highly ionized. 
B) The solution is slightly ionized. 
C) The solution is highly reactive. 
D) The solution is slightly reactive. 
E) none of the above 
A) The solution is highly ionized. 
B) The solution is slightly ionized. 
C) The solution is highly reactive. 
D) The solution is slightly reactive. 
E) none of the above

Question 10

Which of the following is the ionization constant expression for water?

Accepted Answer

A) Kw = [H+] [OH-] 
B) Kw = [H₂O] [H₂O] 
C) Kw = [H₂O] / [H+] [OH-] 
D) Kw = [H+] [OH-] / [H₂O] 
E) none of the above 
A) Kw = [H+] [OH-] 
B) Kw = [H₂O] [H₂O] 
C) Kw = [H₂O] / [H+] [OH-] 
D) Kw = [H+] [OH-] / [H₂O] 
E) none of the above

Question 11

Which of the following is a general property of an acidic solution?

Accepted Answer

A) tastes sour 
B) feels slippery 
C) turns litmus paper blue 
D) pH greater than 7 
E) none of the above 
A) tastes sour 
B) feels slippery 
C) turns litmus paper blue 
D) pH greater than 7 
E) none of the above

Question 12

Beakers W,X,Y,and Z contain either aqueous NaOH,KOH,LiOH,or NH₄OH.Which beaker contains aqueous ammonia if the light bulb glows brightly when testing the conductivity of beakers W,X,and Z?

Accepted Answer

A) beaker W 
B) beaker X 
C) beaker Y 
D) beaker Z 
E) all of the above 
A) beaker W 
B) beaker X 
C) beaker Y 
D) beaker Z 
E) all of the above

Question 13

What is the term for the product of the molar hydrogen ion concentration times the molar hydroxide ion concentration in water?

Accepted Answer

A) autoionization constant of water,Ka 
B) dissociation constant of water,Kd 
C) ionization constant of water,Kw 
D) solubility constant of water,Ksp 
E) none of the above 
A) autoionization constant of water,Ka 
B) dissociation constant of water,Kd 
C) ionization constant of water,Kw 
D) solubility constant of water,Ksp 
E) none of the above

Question 14

What is the molarity of a sodium hydroxide solution if 40.00 mL of NaOH is required to neutralize 0.900 g of oxalic acid,H₂C₂O₄, (90.04 g/mol)? H₂C₂O₄(aq)+ 2 NaOH(aq)→Na₂C₂O₄(aq)+ 2 H₂O(l)

Accepted Answer

A) 0.125 M 
B) 0.250 M 
C) 0.400 M 
D) 0.500 M 
E) 0.800 M 
A) 0.125 M 
B) 0.250 M 
C) 0.400 M 
D) 0.500 M 
E) 0.800 M

Question 15

Which of the following expresses the molar concentration of the hydrogen ion on an exponential scale?

Accepted Answer

A) aH 
B) bH 
C) eH 
D) pH 
E) none of the above 
A) aH 
B) bH 
C) eH 
D) pH 
E) none of the above

Question 16

If 25.0 mL of 0.100 M Ca(OH)2 is titrated with 0.200 M HNO₃,what volume of nitric acid is required to neutralize the base? 2 HNO₃(aq)+ Ca(OH)2(aq)→ 2 Ca(NO₃)2(aq)+ 2 H₂O(l)

Accepted Answer

A) 12.5 mL 
B) 20.0 mL 
C) 25.0 mL 
D) 40.0 mL 
E) 50.0 mL 
A) 12.5 mL 
B) 20.0 mL 
C) 25.0 mL 
D) 40.0 mL 
E) 50.0 mL

Question 17

Which of the following atmospheric pollutants that causes acid rain is mainly from the combustion of fossil fuels?

Accepted Answer

A) CO₂ 
B) NO₂ 
C) SO₂ 
D) all of the above 
E) none of the above 
A) CO₂ 
B) NO₂ 
C) SO₂ 
D) all of the above 
E) none of the above

Question 18

Acetic acid is a weak acid,potassium hydroxide is a strong base,and potassium acetate is a soluble salt.Which of the following is the net ionic equation for the reaction? HC₂H₃O₂(aq)+ KOH(aq)→ KC₂H₃O₂(aq)+ H₂O(l)

Accepted Answer

A) H+(aq)+ OH-(aq)→ H₂O(l) 
B) C₂H₃O₂-(aq)+ K+(aq)→ KC₂H₃O₂(aq) 
C) H+(aq)+ KOH(aq)→ K+(aq)+ H₂O(l) 
D) HC₂H₃O₂(aq)+ OH-(aq)→ C₂H₃O₂-(aq)+ H₂O(l) 
E) none of the above 
A) H+(aq)+ OH-(aq)→ H₂O(l) 
B) C₂H₃O₂-(aq)+ K+(aq)→ KC₂H₃O₂(aq) 
C) H+(aq)+ KOH(aq)→ K+(aq)+ H₂O(l) 
D) HC₂H₃O₂(aq)+ OH-(aq)→ C₂H₃O₂-(aq)+ H₂O(l) 
E) none of the above

Question 19

What is the pH of an aqueous solution if the [H+] = 0.000 000 075 M?

Accepted Answer

A) 0.88 
B) 6.12 
C) 6.88 
D) 7.12 
E) 8.88 
A) 0.88 
B) 6.12 
C) 6.88 
D) 7.12 
E) 8.88

Question 20

Which of the following solutions is amphiprotic?

Accepted Answer

A) H₃PO₄(aq) 
B) Na₂HPO₄(aq) 
C) Na3PO₄(aq) 
D) all of the above 
E) none of the above 
A) H₃PO₄(aq) 
B) Na₂HPO₄(aq) 
C) Na3PO₄(aq) 
D) all of the above 
E) none of the above

Exam 14: Acids and Bases

If a saliva specimen has a pH of 7,the solution is which of the following?

A hydrochloric acid solution is 6.00 M and the density is 1.10 g/mL.What is the mass/mass percent concentration of HCl (36.46 g/mol)?

If a drain cleaner has a pH of 14,the solution is which of the following?

What is the term for a solution whose concentration has been established accurately,usually to three or four significant digits?

Which of the following is an example of an Arrhenius base?

What is the term for the laboratory procedure of delivering a measured volume of solution through a buret?

What is the molarity of a nitric acid solution if 25.00 mL of HNO₃ is required to neutralize 0.500 g of calcium carbonate (100.09 g/mol)? 2 HNO₃(aq)+ CaCO₃(s)→ Ca(NO₃)2(aq)+ H₂O(l)+ CO₂(g)

What is the term for a substance that releases hydroxide ions in water?

If an unknown solution is a poor conductor of electricity,which of the following must be true?

Which of the following is the ionization constant expression for water?

Which of the following is a general property of an acidic solution?

Beakers W,X,Y,and Z contain either aqueous NaOH,KOH,LiOH,or NH₄OH.Which beaker contains aqueous ammonia if the light bulb glows brightly when testing the conductivity of beakers W,X,and Z?

What is the term for the product of the molar hydrogen ion concentration times the molar hydroxide ion concentration in water?

What is the molarity of a sodium hydroxide solution if 40.00 mL of NaOH is required to neutralize 0.900 g of oxalic acid,H₂C₂O₄, (90.04 g/mol)? H₂C₂O₄(aq)+ 2 NaOH(aq)→Na₂C₂O₄(aq)+ 2 H₂O(l)

Which of the following expresses the molar concentration of the hydrogen ion on an exponential scale?

If 25.0 mL of 0.100 M Ca(OH)2 is titrated with 0.200 M HNO₃,what volume of nitric acid is required to neutralize the base? 2 HNO₃(aq)+ Ca(OH)2(aq)→ 2 Ca(NO₃)2(aq)+ 2 H₂O(l)

Which of the following atmospheric pollutants that causes acid rain is mainly from the combustion of fossil fuels?

Acetic acid is a weak acid,potassium hydroxide is a strong base,and potassium acetate is a soluble salt.Which of the following is the net ionic equation for the reaction? HC₂H₃O₂(aq)+ KOH(aq)→ KC₂H₃O₂(aq)+ H₂O(l)

What is the pH of an aqueous solution if the [H+] = 0.000 000 075 M?

Which of the following solutions is amphiprotic?

Introduction to Chemistry

The Metric System

Matter and Energy

Models of the Atom

The Periodic Table

Language of Chemistry

Chemical Reactions

The Mole Concept

Chemical Equation Calculations

Gases

Liquids and Solids

Chemical Bonding

Solutions

Advanced Problem Solving

Chemical Equilibrium

Oxidation and Reduction

Nuclear Chemistry

Organic Chemistry

Biochemistry

Interlude: Prerequisite Science Skills

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