Given the pKa for ammonium ion is 9.26, what is the pH of 1 L of Solution which contains 5.35 g of NH4Cl, and contains the ammonium ion at a concentration of 0.2 mol L-1? (Molar mass of NH4Cl = 54.5 g mol-1.)

A) 7.00 B) 7.65 C) 8.96 D) 9.56 E) 9.95 A) 7.00 B) 7.65 C) 8.96 D) 9.56 E) 9.95

A solution of HCl at concentration of 4 F1F1F1S1F1F1F10 10-4 mol L-1 has a pH of which of the following?

A) 2.67 B) 3.21 C) 3.40 D) 4.31 E) 4.0 A) 2.67 B) 3.21 C) 3.40 D) 4.31 E) 4.0

Exam 17: Acids, Bases, and Buffer Solutions: Life in an Aqueous Environment

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Match the following amino acids with the most appropriate description of the extent of ionization of their side chains when the pH of their environment has a value of 10.0 -Lysine (pK_a 10.5)

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Question 1

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The pH of a 0.005 M solution of hydrobromic acid is which of the following?

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Question 2

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A 0.1 M solution of ethanoic acid is 1.34% ionized. What is the value of K_a for ethanoic acid?

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Question 3

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Look at the following equilibrium reaction: Match each chemical species with the term that best describes its role in this reaction scheme. -Base

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Question 4

Which of the following reactions depict the behaviour of an acid? Select any that apply.

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Question 5

Look at the following equilibrium reaction: Match each chemical species with the term that best describes its role in this reaction scheme. -Conjugate acid

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Question 6

The pH of human blood is 7.4. Therefore the hydrogen ion concentration in human blood is which of the following?

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Question 7

Match the following amino acids with the most appropriate description of the extent of ionization of their side chains when the pH of their environment has a value of 10.0 -Glutamic acid (pK_a 4.1)

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Question 8

Given the pK_a for ammonium ion is 9.26, what is the pH of 1 L of Solution which contains 5.35 g of NH₄Cl, and contains the ammonium ion at a concentration of 0.2 mol L^-1? (Molar mass of NH₄Cl = 54.5 g mol^-1.)

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Question 9

Which of the following statements about buffer solutions are true? Select any that apply.

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Question 10

Look at the following equilibrium reaction: Match each chemical species with the term that best describes its role in this reaction scheme. -Acid

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Question 11

Match the following amino acids with the most appropriate description of the extent of ionization of their side chains when the pH of their environment has a value of 10.0 -Arginine (pK_a 12.5)

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Question 12

If the concentration of [OH^-] in an aqueous solution is 0.3 M, what is the pH of that solution?

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Question 13

Match the type of compound with the biological environment into which it is most likely to partition. -Strong acid

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Question 14

A solution of HCl at concentration of 4  10^-4 mol L^-1has a pH of which of the following?

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Question 15

Match the type of compound with the biological environment into which it is most likely to partition. -Weak acid

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Question 16

Which of the following depicts a neutralization reaction?

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Question 17

Which of the following acids would you use to make an effective buffer for a reaction at pH 8?

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Question 18

Which one of the following is the correct expression for the ion product of water?

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Question 19

Which of the following is the weakest acid?

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Question 20

Showing 1 - 20 of 21

Match the following amino acids with the most appropriate description of the extent of ionization of their side chains when the pH of their environment has a value of 10.0 -Lysine (pK_a 10.5)

The pH of a 0.005 M solution of hydrobromic acid is which of the following?

A 0.1 M solution of ethanoic acid is 1.34% ionized. What is the value of K_a for ethanoic acid?

Look at the following equilibrium reaction: Match each chemical species with the term that best describes its role in this reaction scheme. -Base

Which of the following reactions depict the behaviour of an acid? Select any that apply.

Look at the following equilibrium reaction: Match each chemical species with the term that best describes its role in this reaction scheme. -Conjugate acid

The pH of human blood is 7.4. Therefore the hydrogen ion concentration in human blood is which of the following?

Match the following amino acids with the most appropriate description of the extent of ionization of their side chains when the pH of their environment has a value of 10.0 -Glutamic acid (pK_a 4.1)

Given the pK_a for ammonium ion is 9.26, what is the pH of 1 L of Solution which contains 5.35 g of NH₄Cl, and contains the ammonium ion at a concentration of 0.2 mol L^-1? (Molar mass of NH₄Cl = 54.5 g mol^-1.)

Which of the following statements about buffer solutions are true? Select any that apply.

Look at the following equilibrium reaction: Match each chemical species with the term that best describes its role in this reaction scheme. -Acid

Match the following amino acids with the most appropriate description of the extent of ionization of their side chains when the pH of their environment has a value of 10.0 -Arginine (pK_a 12.5)

If the concentration of [OH^-] in an aqueous solution is 0.3 M, what is the pH of that solution?

Match the type of compound with the biological environment into which it is most likely to partition. -Strong acid

A solution of HCl at concentration of 4  10^-4 mol L^-1has a pH of which of the following?

Match the type of compound with the biological environment into which it is most likely to partition. -Weak acid

Which of the following depicts a neutralization reaction?

Which of the following acids would you use to make an effective buffer for a reaction at pH 8?

Which one of the following is the correct expression for the ion product of water?

Which of the following is the weakest acid?

Chemical Analysis: Characterizing Chemical Compounds

Kinetics: What Affects the Speed of a Reaction

Equilibria: How Far Do Reactions Go

Energy: What Makes Reactions Go

Reaction Mechanisms: The Chemical Changes That Drive the Chemistry of Life

Chemical Reactions, Oxidation, and Reduction: Bringing Molecules to Life

Metals in Biology: Life Beyond Carbon

Biological Macromolecules: The Infrastructure of Life

Isomerism: Generating Chemical Variety

Molecular Shape and Structure: Life in Three Dimensions

Functional Groups: Adding Function to the Framework of Life

Hydrocarbons: The Framework of Life

Moles, Concentrations, and Dilutions: Making Sense of Chemical Numbers

Molecular Interactions: Holding It All Together

Compounds and Chemical Bonding: Bringing Atoms Together

Atoms: The Foundations of Life

Introduction: Why Biologists Need Chemistry

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Exam 17: Acids, Bases, and Buffer Solutions: Life in an Aqueous Environment

Match the following amino acids with the most appropriate description of the extent of ionization of their side chains when the pH of their environment has a value of 10.0 -Lysine (pKa 10.5)

The pH of a 0.005 M solution of hydrobromic acid is which of the following?

A 0.1 M solution of ethanoic acid is 1.34% ionized. What is the value of Ka for ethanoic acid?

Look at the following equilibrium reaction: Match each chemical species with the term that best describes its role in this reaction scheme. -Base

Which of the following reactions depict the behaviour of an acid? Select any that apply.

Look at the following equilibrium reaction: Match each chemical species with the term that best describes its role in this reaction scheme. -Conjugate acid

The pH of human blood is 7.4. Therefore the hydrogen ion concentration in human blood is which of the following?

Match the following amino acids with the most appropriate description of the extent of ionization of their side chains when the pH of their environment has a value of 10.0 -Glutamic acid (pKa 4.1)

Given the pKa for ammonium ion is 9.26, what is the pH of 1 L of Solution which contains 5.35 g of NH4Cl, and contains the ammonium ion at a concentration of 0.2 mol L-1? (Molar mass of NH4Cl = 54.5 g mol-1.)

Which of the following statements about buffer solutions are true? Select any that apply.

Look at the following equilibrium reaction: Match each chemical species with the term that best describes its role in this reaction scheme. -Acid

Match the following amino acids with the most appropriate description of the extent of ionization of their side chains when the pH of their environment has a value of 10.0 -Arginine (pKa 12.5)

If the concentration of [OH-] in an aqueous solution is 0.3 M, what is the pH of that solution?

Match the type of compound with the biological environment into which it is most likely to partition. -Strong acid

A solution of HCl at concentration of 4  10-4 mol L-1 has a pH of which of the following?

Match the type of compound with the biological environment into which it is most likely to partition. -Weak acid

Which of the following depicts a neutralization reaction?

Which of the following acids would you use to make an effective buffer for a reaction at pH 8?

Which one of the following is the correct expression for the ion product of water?

Which of the following is the weakest acid?

Chemical Analysis: Characterizing Chemical Compounds

Kinetics: What Affects the Speed of a Reaction

Equilibria: How Far Do Reactions Go

Energy: What Makes Reactions Go

Reaction Mechanisms: The Chemical Changes That Drive the Chemistry of Life

Chemical Reactions, Oxidation, and Reduction: Bringing Molecules to Life

Metals in Biology: Life Beyond Carbon

Biological Macromolecules: The Infrastructure of Life

Isomerism: Generating Chemical Variety

Molecular Shape and Structure: Life in Three Dimensions

Functional Groups: Adding Function to the Framework of Life

Hydrocarbons: The Framework of Life

Moles, Concentrations, and Dilutions: Making Sense of Chemical Numbers

Molecular Interactions: Holding It All Together

Compounds and Chemical Bonding: Bringing Atoms Together

Atoms: The Foundations of Life

Introduction: Why Biologists Need Chemistry

Filters

Match the following amino acids with the most appropriate description of the extent of ionization of their side chains when the pH of their environment has a value of 10.0 -Lysine (pK_a 10.5)

A 0.1 M solution of ethanoic acid is 1.34% ionized. What is the value of K_a for ethanoic acid?

Match the following amino acids with the most appropriate description of the extent of ionization of their side chains when the pH of their environment has a value of 10.0 -Glutamic acid (pK_a 4.1)

Given the pK_a for ammonium ion is 9.26, what is the pH of 1 L of Solution which contains 5.35 g of NH₄Cl, and contains the ammonium ion at a concentration of 0.2 mol L^-1? (Molar mass of NH₄Cl = 54.5 g mol^-1.)

Match the following amino acids with the most appropriate description of the extent of ionization of their side chains when the pH of their environment has a value of 10.0 -Arginine (pK_a 12.5)

If the concentration of [OH^-] in an aqueous solution is 0.3 M, what is the pH of that solution?

A solution of HCl at concentration of 4  10^-4 mol L^-1has a pH of which of the following?