Question 1

What is the color of bromthymol blue indicator at pH 7,the midpoint at which yellow and blue 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 B

Question 2

If 10.0 mL of 0.100 M HCl is titrated with 0.200 M NaOH,what volume of sodium hydroxide solution is required to neutralize the acid? HCl(aq)+ NaOH(aq)→ NaCl(aq)+ H₂O(l)

Accepted Answer

A) 5.00 mL 
B) 10.0 mL 
C) 20.0 mL 
D) 40.0 mL 
E) 80.0 mL 
A) 5.00 mL 
B) 10.0 mL 
C) 20.0 mL 
D) 40.0 mL 
E) 80.0 mL A

Question 3

What is the molarity of a sodium hydroxide solution if 35.00 mL of NaOH is required to neutralize 1.555 g of KHP,that is KHC8H₄O₄ (204.23 g/mol)? KHC8H₄O₄(aq)+ NaOH(aq)→ KNaC8H₄O₄(aq)+ H₂O(l)

Accepted Answer

A) 0.109 M 
B) 0.218 M 
C) 0.267 M 
D) 0.435 M 
E) 3.75 M 
A) 0.109 M 
B) 0.218 M 
C) 0.267 M 
D) 0.435 M 
E) 3.75 M B

Question 4

In the following reaction,which reactant is a Brønsted-Lowry base? NaHS(aq)+ HCN(aq)→ NaCN(aq)+ H₂S(aq)

Accepted Answer

A) NaHS 
B) HCN 
C) NaCN 
D) H₂S 
E) none of the above 
A) NaHS 
B) HCN 
C) NaCN 
D) H₂S 
E) none of the above

Question 5

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

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

In the following reaction,which reactant is a Brønsted-Lowry acid? 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 7

Which of the following indicators is orange at pH 5?

Accepted Answer

A) methyl red 
B) bromthymol blue 
C) phenolphthalein 
D) all of the above 
E) none of the above 
A) methyl red 
B) bromthymol blue 
C) phenolphthalein 
D) all of the above 
E) none of the above

Question 8

Which of the following is a strong base?

Accepted Answer

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

Question 9

What is the term for a solution that is a poor conductor of electricity?

Accepted Answer

A) aqueous electrolyte 
B) nonelectrolyte 
C) strong electrolyte 
D) weak electrolyte 
E) none of the above 
A) aqueous electrolyte 
B) nonelectrolyte 
C) strong electrolyte 
D) weak electrolyte 
E) none of the above

Question 10

Given an aqueous solution in which the [H+] = 5.0 x 10-3 M,what is the molar hydroxide ion concentration?

Accepted Answer

A) [OH-] = 2.0 x 10-10 M 
B) [OH-] = 2.0 x 10-11 M 
C) [OH-] = 2.0 x 10-12 M 
D) [OH-] = 5.0 x 10-11 M 
E) [OH-] = 5.0 x 10-12 M 
A) [OH-] = 2.0 x 10-10 M 
B) [OH-] = 2.0 x 10-11 M 
C) [OH-] = 2.0 x 10-12 M 
D) [OH-] = 5.0 x 10-11 M 
E) [OH-] = 5.0 x 10-12 M

Question 11

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

Accepted Answer

A) NH₄C₂H₃O₂(aq) 
B) HC₂H₃O₂(aq) 
C) KC₂H₃O₂(aq) 
D) all of the above 
E) none of the above 
A) NH₄C₂H₃O₂(aq) 
B) HC₂H₃O₂(aq) 
C) KC₂H₃O₂(aq) 
D) all of the above 
E) none of the above

Question 12

If milk of magnesia has a pH of 10,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 13

In the following reaction,which reactant is a Brønsted-Lowry acid? NaHS(aq)+ HCN(aq)→ NaCN(aq)+ H₂S(aq)

Accepted Answer

A) NaHS 
B) HCN 
C) NaCN 
D) H₂S 
E) none of the above 
A) NaHS 
B) HCN 
C) NaCN 
D) H₂S 
E) none of the above

Question 14

What is the [H+] in a blood sample that registers 7.30 using a pH meter?

Accepted Answer

A) 0.86 M 
B) 0.000 020 M 
C) 0.000 000 50 M 
D) 0.000 000 020 M 
E) 0.000 000 050 M 
A) 0.86 M 
B) 0.000 020 M 
C) 0.000 000 50 M 
D) 0.000 000 020 M 
E) 0.000 000 050 M

Question 15

What is the term for the process of a polar molecular compound dissolving in water and forming positive and negative ions?

Accepted Answer

A) dissociation 
B) hydration 
C) ionization 
D) solvation 
E) none of the above 
A) dissociation 
B) hydration 
C) ionization 
D) solvation 
E) none of the above

Question 16

Nitric acid is a strong acid,sodium hydroxide is a strong base,and sodium nitrate is a soluble salt.Which of the following is the net ionic equation for the reaction? HNO₃(aq)+ NaOH(aq)→ NaNO₃(aq)+ H₂O(l)

Accepted Answer

A) H+(aq)+ OH-(aq)→ H₂O(l) 
B) NO₃-(aq)+ Na+(aq)→ NaNO₃(s) 
C) H+(aq)+ NaOH(aq)→ Na+(aq)+ H₂O(l) 
D) HNO₃(aq)+ OH-(aq)→ NO₃-(aq)+ H₂O(l) 
E) none of the above 
A) H+(aq)+ OH-(aq)→ H₂O(l) 
B) NO₃-(aq)+ Na+(aq)→ NaNO₃(s) 
C) H+(aq)+ NaOH(aq)→ Na+(aq)+ H₂O(l) 
D) HNO₃(aq)+ OH-(aq)→ NO₃-(aq)+ H₂O(l) 
E) none of the above

Question 17

In the following reaction,which reactant is a Brønsted-Lowry acid? 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 18

What is the pH of an aqueous solution if the [H+] = 0.001 M?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 10 
E) 11 
A) 1 
B) 2 
C) 3 
D) 10 
E) 11

Question 19

What is the hydrogen ion concentration of an aqueous solution having a pH of 0?

Accepted Answer

A) -1 M 
B) 0 M 
C) 1 M 
D) 10 M 
E) none of the above 
A) -1 M 
B) 0 M 
C) 1 M 
D) 10 M 
E) none of the above

Question 20

What is the pH of an aqueous solution if the [H+] = 0.000 042 M?

Accepted Answer

A) 0.62 
B) 4.38 
C) 4.62 
D) 5.38 
E) 9.62 
A) 0.62 
B) 4.38 
C) 4.62 
D) 5.38 
E) 9.62

Exam 14: Acids and Bases

What is the color of bromthymol blue indicator at pH 7,the midpoint at which yellow and blue are in equal concentration?

If 10.0 mL of 0.100 M HCl is titrated with 0.200 M NaOH,what volume of sodium hydroxide solution is required to neutralize the acid? HCl(aq)+ NaOH(aq)→ NaCl(aq)+ H₂O(l)

What is the molarity of a sodium hydroxide solution if 35.00 mL of NaOH is required to neutralize 1.555 g of KHP,that is KHC8H₄O₄ (204.23 g/mol)? KHC8H₄O₄(aq)+ NaOH(aq)→ KNaC8H₄O₄(aq)+ H₂O(l)

In the following reaction,which reactant is a Brønsted-Lowry base? NaHS(aq)+ HCN(aq)→ NaCN(aq)+ H₂S(aq)

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

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

Which of the following indicators is orange at pH 5?

Which of the following is a strong base?

What is the term for a solution that is a poor conductor of electricity?

Given an aqueous solution in which the [H+] = 5.0 x 10-3 M,what is the molar hydroxide ion concentration?

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

If milk of magnesia has a pH of 10,the solution is which of the following?

In the following reaction,which reactant is a Brønsted-Lowry acid? NaHS(aq)+ HCN(aq)→ NaCN(aq)+ H₂S(aq)

What is the [H+] in a blood sample that registers 7.30 using a pH meter?

What is the term for the process of a polar molecular compound dissolving in water and forming positive and negative ions?

Nitric acid is a strong acid,sodium hydroxide is a strong base,and sodium nitrate is a soluble salt.Which of the following is the net ionic equation for the reaction? HNO₃(aq)+ NaOH(aq)→ NaNO₃(aq)+ H₂O(l)

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

What is the pH of an aqueous solution if the [H+] = 0.001 M?

What is the hydrogen ion concentration of an aqueous solution having a pH of 0?

What is the pH of an aqueous solution if the [H+] = 0.000 042 M?

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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