Question 1

What classic paper established the concept of ions in aqueous solutions?

Accepted Answer

A) "The Sceptical Chymist" 
B) "Ions in Aqueous Solutions" 
C) "On the Ionization of Aqueous Solutions" 
D) "On the Dissociation of Substances in Aqueous Solutions" 
E) none of the above 
A) "The Sceptical Chymist" 
B) "Ions in Aqueous Solutions" 
C) "On the Ionization of Aqueous Solutions" 
D) "On the Dissociation of Substances in Aqueous Solutions" 
E) none of the above

Question 2

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

Accepted Answer

A) HCl(aq) 
B) HNO₃(aq) 
C) H₂SO₄(aq) 
D) all of the above 
E) none of the above 
A) HCl(aq) 
B) HNO₃(aq) 
C) H₂SO₄(aq) 
D) all of the above 
E) none of the above

Question 3

If a 25.0 mL sample of sulfuric acid is titrated with 50.0 mL of 0.200 M potassium hydroxide to a phenolphthalein endpoint,what is the molarity of the acid? H₂SO₄(aq)+ 2 KOH(aq)→ k₂SO₄(aq)+ 2 H₂O(l)

Accepted Answer

A) 0.100 M 
B) 0.150 M 
C) 0.200 M 
D) 0.300 M 
E) 0.400 M 
A) 0.100 M 
B) 0.150 M 
C) 0.200 M 
D) 0.300 M 
E) 0.400 M

Question 4

If 20.0 mL of 0.200 M H₂SO₄ is titrated with 0.100 M NaOH,what volume of sodium hydroxide is required to neutralize the acid? H₂SO₄(aq)+ 2 NaOH(aq)→ Na₂SO₄(aq)+ 2 H₂O(l)

Accepted Answer

A) 10.0 mL 
B) 20.0 mL 
C) 40.0 mL 
D) 60.0 mL 
E) 80.0 mL 
A) 10.0 mL 
B) 20.0 mL 
C) 40.0 mL 
D) 60.0 mL 
E) 80.0 mL

Question 5

Which of the following is true if the pH of a solution increases from 2 to 5?

Accepted Answer

A) [ H+ ] increases 
B) [ H+ ] decreases 
C) Kw increases 
D) Kw decreases 
E) none of the above 
A) [ H+ ] increases 
B) [ H+ ] decreases 
C) Kw increases 
D) Kw decreases 
E) none of the above

Question 6

Which of the following is a strong acid?

Accepted Answer

A) HCl(aq)(~ 100% ionized) 
B) H₂SO₄(aq)(~ 100% ionized) 
C) HNO₃(aq)(~ 100% ionized) 
D) all of the above 
E) none of the above 
A) HCl(aq)(~ 100% ionized) 
B) H₂SO₄(aq)(~ 100% ionized) 
C) HNO₃(aq)(~ 100% ionized) 
D) all of the above 
E) none of the above

Question 7

In the following reaction,which reactant is a Brønsted-Lowry base? NaHCO₃(aq)+ NaH₂PO₄(aq)→ Na₂HPO₄(aq)+ H₂CO₃(aq)

Accepted Answer

A) NaHCO₃ 
B) NaH₂PO₄ 
C) Na₂HPO₄ 
D) H₂CO₃ 
E) none of the above 
A) NaHCO₃ 
B) NaH₂PO₄ 
C) Na₂HPO₄ 
D) H₂CO₃ 
E) none of the above

Question 8

If a 50.0 mL sample of ammonium hydroxide is titrated with 25.0 mL of 0.200 M sulfuric acid to a methyl red endpoint,what is the molarity of the base? 2 NH₄OH(aq)+ H₂SO₄(aq)→ (NH₄)2SO₄(aq)+ 2 H₂O(l)

Accepted Answer

A) 0.100 M 
B) 0.150 M 
C) 0.200 M 
D) 0.300 M 
E) 0.400 M 
A) 0.100 M 
B) 0.150 M 
C) 0.200 M 
D) 0.300 M 
E) 0.400 M

Question 9

What is the term for a substance capable of either donating or accepting a proton in an acid-base reaction?

Accepted Answer

A) amphiprotic 
B) aprotic 
C) nonprotic 
D) semiprotic 
E) none of the above 
A) amphiprotic 
B) aprotic 
C) nonprotic 
D) semiprotic 
E) none of the above

Question 10

What acid and base are neutralized to give potassium nitrate salt?

Accepted Answer

A) HCl(aq)and KOH(aq) 
B) HNO₃(aq)and KOH(aq) 
C) HNO₃(aq)and KNO₃(aq) 
D) HOH(aq)and KNO₃(aq) 
E) none of the above 
A) HCl(aq)and KOH(aq) 
B) HNO₃(aq)and KOH(aq) 
C) HNO₃(aq)and KNO₃(aq) 
D) HOH(aq)and KNO₃(aq) 
E) none of the above

Question 11

In the following reaction,which reactant is a Brønsted-Lowry base? HCl(aq)+ KHS(aq)→ KCl(aq)+ H₂S(aq)

Accepted Answer

A) HCl 
B) KHS 
C) KCl 
D) H₂S 
E) none of the above 
A) HCl 
B) KHS 
C) KCl 
D) H₂S 
E) none of the above

Question 12

Which of the following is a weak base?

Accepted Answer

A) NH₄OH(aq)(~ 1% ionized) 
B) KOH(aq)(~ 100% ionized) 
C) LiOH(aq)(~ 100% ionized) 
D) all of the above 
E) none of the above 
A) NH₄OH(aq)(~ 1% ionized) 
B) KOH(aq)(~ 100% ionized) 
C) LiOH(aq)(~ 100% ionized) 
D) all of the above 
E) none of the above

Question 13

In the following reaction,which reactant is a Brønsted-Lowry base? H₂CO₃(aq)+ Na₂HPO₄(aq)→ NaHCO₃(aq)+ NaH₂PO₄(aq)

Accepted Answer

A) H₂CO₃ 
B) Na₂HPO₄ 
C) NaH₂PO₄ 
D) NaHCO₃ 
E) none of the above 
A) H₂CO₃ 
B) Na₂HPO₄ 
C) NaH₂PO₄ 
D) NaHCO₃ 
E) none of the above

Question 14

Proline is an amino acid that can be abbreviated HPro.If 33.55 mL of 0.150 M NaOH neutralizes 0.579 g of HPro,what is the molar mass of proline? HPro(aq)+ NaOH(aq)→ NaPro(aq)+ H₂O(l)

Accepted Answer

A) 8.69 g/mol 
B) 86.9 g/mol 
C) 115 g/mol 
D) 291 g/mol 
E) 772 g/mol 
A) 8.69 g/mol 
B) 86.9 g/mol 
C) 115 g/mol 
D) 291 g/mol 
E) 772 g/mol

Question 15

What is the pH of an aqueous solution if the [H+] = 0.000 001 M?

Accepted Answer

A) 1 
B) 5 
C) 6 
D) 8 
E) 10 
A) 1 
B) 5 
C) 6 
D) 8 
E) 10

Question 16

Lactic acid is found in sour milk and can be abbreviated HLac.If 47.50 mL of 0.275 M NaOH neutralizes 1.180 g of HLac,what is the molar mass of lactic acid? HLac(aq)+ NaOH(aq)→ NaLac(aq)+ H₂O(l)

Accepted Answer

A) 45.1 g/mol 
B) 90.3 g/mol 
C) 111 g/mol 
D) 181 g/mol 
E) 204 g/mol 
A) 45.1 g/mol 
B) 90.3 g/mol 
C) 111 g/mol 
D) 181 g/mol 
E) 204 g/mol

Question 17

What is the color of methyl red indicator at pH 5,the midpoint at which red and yellow are in equal concentration?

Accepted Answer

A) blue 
B) green 
C) orange 
D) red 
E) yellow 
A) blue 
B) green 
C) orange 
D) red 
E) yellow

Question 18

In the following reaction,which reactant is a Brønsted-Lowry base? Na₂HPO₄(aq)+ H₂CO₃(aq)→ NaH₂PO₄(aq)+ NaHCO₃(aq)

Accepted Answer

A) Na₂HPO₄ 
B) H₂CO₃ 
C) NaH₂PO₄ 
D) NaHCO₃ 
E) none of the above 
A) Na₂HPO₄ 
B) H₂CO₃ 
C) NaH₂PO₄ 
D) NaHCO₃ 
E) none of the above

Question 19

What is the term for a substance that accepts a proton in an acid-base reaction?

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 20

What is the term used as a synonym for hydrogen ion acceptor?

Accepted Answer

A) amphiprotic 
B) Arrhenius acid 
C) Brønsted-Lowry acid 
D) proton acceptor 
E) none of the above 
A) amphiprotic 
B) Arrhenius acid 
C) Brønsted-Lowry acid 
D) proton acceptor 
E) none of the above

Exam 14: Acids and Bases

What classic paper established the concept of ions in aqueous solutions?

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

If a 25.0 mL sample of sulfuric acid is titrated with 50.0 mL of 0.200 M potassium hydroxide to a phenolphthalein endpoint,what is the molarity of the acid? H₂SO₄(aq)+ 2 KOH(aq)→ k₂SO₄(aq)+ 2 H₂O(l)

If 20.0 mL of 0.200 M H₂SO₄ is titrated with 0.100 M NaOH,what volume of sodium hydroxide is required to neutralize the acid? H₂SO₄(aq)+ 2 NaOH(aq)→ Na₂SO₄(aq)+ 2 H₂O(l)

Which of the following is true if the pH of a solution increases from 2 to 5?

Which of the following is a strong acid?

In the following reaction,which reactant is a Brønsted-Lowry base? NaHCO₃(aq)+ NaH₂PO₄(aq)→ Na₂HPO₄(aq)+ H₂CO₃(aq)

If a 50.0 mL sample of ammonium hydroxide is titrated with 25.0 mL of 0.200 M sulfuric acid to a methyl red endpoint,what is the molarity of the base? 2 NH₄OH(aq)+ H₂SO₄(aq)→ (NH₄)2SO₄(aq)+ 2 H₂O(l)

What is the term for a substance capable of either donating or accepting a proton in an acid-base reaction?

What acid and base are neutralized to give potassium nitrate salt?

In the following reaction,which reactant is a Brønsted-Lowry base? HCl(aq)+ KHS(aq)→ KCl(aq)+ H₂S(aq)

Which of the following is a weak base?

In the following reaction,which reactant is a Brønsted-Lowry base? H₂CO₃(aq)+ Na₂HPO₄(aq)→ NaHCO₃(aq)+ NaH₂PO₄(aq)

Proline is an amino acid that can be abbreviated HPro.If 33.55 mL of 0.150 M NaOH neutralizes 0.579 g of HPro,what is the molar mass of proline? HPro(aq)+ NaOH(aq)→ NaPro(aq)+ H₂O(l)

What is the pH of an aqueous solution if the [H+] = 0.000 001 M?

Lactic acid is found in sour milk and can be abbreviated HLac.If 47.50 mL of 0.275 M NaOH neutralizes 1.180 g of HLac,what is the molar mass of lactic acid? HLac(aq)+ NaOH(aq)→ NaLac(aq)+ H₂O(l)

What is the color of methyl red indicator at pH 5,the midpoint at which red and yellow are in equal concentration?

In the following reaction,which reactant is a Brønsted-Lowry base? Na₂HPO₄(aq)+ H₂CO₃(aq)→ NaH₂PO₄(aq)+ NaHCO₃(aq)

What is the term for a substance that accepts a proton in an acid-base reaction?

What is the term used as a synonym for hydrogen ion acceptor?

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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