Question 1

Sodium hydroxide is a strong base and ammonium hydroxide is a weak base.Which of the following correctly portrays aqueous solutions of the two bases?

Accepted Answer

A) NaOH(aq)and NH₄OH(aq) 
B) Na+(aq)+ OH-(aq)and NH₄OH(aq) 
C) NaOH(aq)and NH₄+(aq)+ OH-(aq) 
D) Na+(aq)+ OH-(aq)and NH₄+(aq)+ OH-(aq) 
E) none of the above 
A) NaOH(aq)and NH₄OH(aq) 
B) Na+(aq)+ OH-(aq)and NH₄OH(aq) 
C) NaOH(aq)and NH₄+(aq)+ OH-(aq) 
D) Na+(aq)+ OH-(aq)and NH₄+(aq)+ OH-(aq) 
E) none of the above

Question 2

Which of the following acids is found in acid rain?

Accepted Answer

A) carbonic acid 
B) nitric acid 
C) sulfuric acid 
D) all of the above 
E) none of the above 
A) carbonic acid 
B) nitric acid 
C) sulfuric acid 
D) all of the above 
E) none of the above

Question 3

Which of the following is a general property of a basic solution?

Accepted Answer

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

Question 4

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

Accepted Answer

A) NaOH(aq) 
B) Ca(OH)2(aq) 
C) Al(OH)3(s) 
D) all of the above 
E) none of the above 
A) NaOH(aq) 
B) Ca(OH)2(aq) 
C) Al(OH)3(s) 
D) all of the above 
E) none of the above

Question 5

What is the molarity of a hydrochloric acid solution if 20.00 mL of HCl is required to neutralize 0.424 g of sodium carbonate (105.99 g/mol)? 2 HCl(aq)+ Na₂CO₃(aq)→ 2 NaCl(aq)+ H₂O(l)+ CO₂(g)

Accepted Answer

A) 0.100 M 
B) 0.200 M 
C) 0.300 M 
D) 0.400 M 
E) 0.500 M 
A) 0.100 M 
B) 0.200 M 
C) 0.300 M 
D) 0.400 M 
E) 0.500 M

Question 6

Which of the following is true if the hydrogen ion concentration of an aqueous solution increases?

Accepted Answer

A) pH increases 
B) pH decreases 
C) Kw increases 
D) Kw decreases 
E) none of the above 
A) pH increases 
B) pH decreases 
C) Kw increases 
D) Kw decreases 
E) none of the above

Question 7

In the following reaction,which reactant is a Brønsted-Lowry acid? 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 8

If a vinegar sample has a pH of 5,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 9

What is the term for the stage in an acid-base titration when the indicator changes color?

Accepted Answer

A) color point 
B) endpoint 
C) indicator point 
D) stoichiometric point 
E) none of the above 
A) color point 
B) endpoint 
C) indicator point 
D) stoichiometric point 
E) none of the above

Question 10

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

Accepted Answer

A) Al(OH)3(s) 
B) Ba(OH)2(aq) 
C) RbOH(aq) 
D) H₂O(l) 
E) none of the above 
A) Al(OH)3(s) 
B) Ba(OH)2(aq) 
C) RbOH(aq) 
D) H₂O(l) 
E) none of the above

Question 11

What is the color of phenolphthalein indicator at pH 10?

Accepted Answer

A) red 
B) blue 
C) pink 
D) colorless 
E) none of the above 
A) red 
B) blue 
C) pink 
D) colorless 
E) none of the above

Question 12

Steelmaking plants and electric power plants that burn low-grade coal release which of the following atmospheric pollutants that produces acid rain?

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 13

What acid and base are neutralized to give lithium fluoride salt?

Accepted Answer

A) HCl(aq)and LiOH(aq) 
B) HF(aq)and LiOH(aq) 
C) HF(aq)and LiF(aq) 
D) HOH(aq)and LiF(aq) 
E) none of the above 
A) HCl(aq)and LiOH(aq) 
B) HF(aq)and LiOH(aq) 
C) HF(aq)and LiF(aq) 
D) HOH(aq)and LiF(aq) 
E) none of the above

Question 14

Which of the following is a strong acid?

Accepted Answer

A) HNO₂(aq)(~ 1% ionized) 
B) H₂SO₃(aq)(~ 1% ionized) 
C) H₃PO₄(aq)(~ 1% ionized) 
D) all of the above 
E) none of the above 
A) HNO₂(aq)(~ 1% ionized) 
B) H₂SO₃(aq)(~ 1% ionized) 
C) H₃PO₄(aq)(~ 1% ionized) 
D) all of the above 
E) none of the above

Question 15

What is the hydrogen ion concentration in a saliva specimen that registers a pH of 6 on a strip of pH paper?

Accepted Answer

A) 0.6 M 
B) 0.000 01 M 
C) 0.000 06 M 
D) 0.000 001 M 
E) 0.000 006 M 
A) 0.6 M 
B) 0.000 01 M 
C) 0.000 06 M 
D) 0.000 001 M 
E) 0.000 006 M

Question 16

If 20.0 mL of 0.500 M KOH is titrated with 0.250 M HNO₃,what volume of nitric acid is required to neutralize the base? HNO₃(aq)+ KOH(aq)→ KNO₃(aq)+ H₂O(l)

Accepted Answer

A) 10.0 mL 
B) 20.0 mL 
C) 25.0 mL 
D) 40.0 mL 
E) 50.0 mL 
A) 10.0 mL 
B) 20.0 mL 
C) 25.0 mL 
D) 40.0 mL 
E) 50.0 mL

Question 17

What is the term for a substance that releases hydrogen 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 18

Glycine is an amino acid that can be abbreviated HGly.If 27.50 mL of 0.120 M NaOH neutralizes 0.248 g of HGly,what is the molar mass of glycine? HGly(aq)+ NaOH(aq)→ NaGly(aq)+ H₂O(l)

Accepted Answer

A) 26.6 g/mol 
B) 37.6 g/mol 
C) 56.8 g/mol 
D) 75.2 g/mol 
E) 151 g/mol 
A) 26.6 g/mol 
B) 37.6 g/mol 
C) 56.8 g/mol 
D) 75.2 g/mol 
E) 151 g/mol

Question 19

Which of the following is a general property of a basic solution?

Accepted Answer

A) tastes sour 
B) turns litmus paper red 
C) pH less than 7 
D) neutralizes bases 
E) none of the above 
A) tastes sour 
B) turns litmus paper red 
C) pH less than 7 
D) neutralizes bases 
E) none of the above

Question 20

Which of the following solutions is amphiprotic?

Accepted Answer

A) H₂CO₃(aq) 
B) NaHCO₃(aq) 
C) Na₂CO₃(aq) 
D) all of the above 
E) none of the above 
A) H₂CO₃(aq) 
B) NaHCO₃(aq) 
C) Na₂CO₃(aq) 
D) all of the above 
E) none of the above

Exam 14: Acids and Bases

Sodium hydroxide is a strong base and ammonium hydroxide is a weak base.Which of the following correctly portrays aqueous solutions of the two bases?

Which of the following acids is found in acid rain?

Which of the following is a general property of a basic solution?

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

What is the molarity of a hydrochloric acid solution if 20.00 mL of HCl is required to neutralize 0.424 g of sodium carbonate (105.99 g/mol)? 2 HCl(aq)+ Na₂CO₃(aq)→ 2 NaCl(aq)+ H₂O(l)+ CO₂(g)

Which of the following is true if the hydrogen ion concentration of an aqueous solution increases?

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

If a vinegar sample has a pH of 5,the solution is which of the following?

What is the term for the stage in an acid-base titration when the indicator changes color?

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

What is the color of phenolphthalein indicator at pH 10?

Steelmaking plants and electric power plants that burn low-grade coal release which of the following atmospheric pollutants that produces acid rain?

What acid and base are neutralized to give lithium fluoride salt?

Which of the following is a strong acid?

What is the hydrogen ion concentration in a saliva specimen that registers a pH of 6 on a strip of pH paper?

If 20.0 mL of 0.500 M KOH is titrated with 0.250 M HNO₃,what volume of nitric acid is required to neutralize the base? HNO₃(aq)+ KOH(aq)→ KNO₃(aq)+ H₂O(l)

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

Glycine is an amino acid that can be abbreviated HGly.If 27.50 mL of 0.120 M NaOH neutralizes 0.248 g of HGly,what is the molar mass of glycine? HGly(aq)+ NaOH(aq)→ NaGly(aq)+ H₂O(l)

Which of the following is a general property of a basic solution?

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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