Resource Topic: Acid-Base Chemistry

• Strong Acids and Bases

  Autograded Virtual Labs

  • Determine the Concentration of the Unknown Strong Acid

    Autograded Virtual Lab

    Perform a titration using an indicator to determine the concentration of an HCl solution.

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  Concept Tests

  • Acid Base Chemistry and Buffers Concept Test

    Concept Test

    These concept tests can be used as part of in-class activities to help students reason about pH, acids, bases and buffer solutions.

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  Scenario-Based Activities

  • [ChemVlab+] Acid Base Chemistry: pH and Swimming Pools

    Scenario-Based Activity

    Students are put in a scenario where they are the lifeguard at their neighborhood pool, and it is their job to not only keep the swimmers safe, but to monitor the water quality of the pool to make sure it's not…

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  Virtual Labs

  • Strong Acid and Base Problems

    Virtual Lab

    Textbook-style strong acid and base problems that can be checked using the Virtual Lab.

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  • Determination of the pH Scale by the Method of Successive Dilutions

    Virtual Lab

    This activity was created as an accompaniment to an in-class demonstration of the method of successive dilutions using HCl, NaOH, a pH meter, and universal indicator solution. After the demonstration, students…

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• Weak Acids and Bases

  Autograded Virtual Labs

  • Unknown Weak Acid Problem

    Autograded Virtual Lab

    Perform an experiment to determine the pKa and concentration of an unknown acid.

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  • Unknown Weak Acid Problem - Bonus

    Autograded Virtual Lab

    Perform an experiment to determine the concentrations of a mixture of two acids.

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  • Unknown Base Problem

    Autograded Virtual Lab

    Perform an experiment to determine the pKa and concentration of an unknown weak base.

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  • Determine the Identity of an Unknown Solid Weak Acid

    Autograded Virtual Lab

    Perform an experiment to determine the molar mass and pKa of an unknown solid acid.

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  Concept Tests

  • Acid Base Chemistry and Buffers Concept Test

    Concept Test

    These concept tests can be used as part of in-class activities to help students reason about pH, acids, bases and buffer solutions.

    Get Info Go

  Virtual Labs

  • Weak Acid and Base Problems

    Virtual Lab

    Textbook-style weak acid and base problems that can be checked using the Virtual Lab.

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  • Determining the pKa and Concentration Ratio of a Protein in Solution

    Virtual Lab

    Use the virtual lab to determine the pKa of a protein then create a buffer solution with a specific concentration ratio of the protein in its protonated/ unprotonated form.

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  • Unknown Acid and Base Problem

    Virtual Lab

    In this exercise, students graph the titration curve of an unknown acid and base to determine their pKa’s and concentrations.

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• Buffer Solutions

  Autograded Virtual Labs

  • Designing a buffer solution with a specific pH

    Autograded Virtual Lab

    Create a buffer solution at a specific pH using a weak acid and its conjugate base.

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  Concept Tests

  • Acid Base Chemistry and Buffers Concept Test

    Concept Test

    These concept tests can be used as part of in-class activities to help students reason about pH, acids, bases and buffer solutions.

    Get Info Go

  Tutorials

  • How Buffers Work

    Tutorial

    This tutorial describes how buffers protect against pH changes when strong acid or base is added.

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  • Creating a buffer from a weak acid and a strong base (Walkthrough activity)

    Tutorial

    This set of problems and tutored examples walks students through calculating the amount weak acid and a strong base needed to create a buffer solution with a specific concentration.

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  • Predicting the pH of a Buffer

    Tutorial

    This tutorial describes the calculations for determining the pH of a buffer solution.

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  • Determining the pH of a buffer solution (Walkthrough activity)

    Tutorial

    This set of problems and tutored examples walks students through calculating the pH of a buffer.

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  • Determining the pH of a buffer solution after addition of NaOH (Walkthrough activity)

    Tutorial

    This set of problems and tutored examples walks students through calculating the pH of a buffer after a strong base has been added

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  • Buffer Capacity

    Tutorial

    This tutorial describes the concept of the effectiveness of a buffer’s ability to offset the effects of adding a strong acid or base on the pH of a system.

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  • Determining the buffer capacity for addition of a strong base (Walkthrough activity)

    Tutorial

    This set of problems and tutored examples walks students through calculating the buffer capacity of a buffer when strong base is added.

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  • Relation of buffer capacity to concentration of buffering agents (Walkthrough activity)

    Tutorial

    This set of problems and tutored examples walks students through calculating a buffer’s capacity and initial concentration when strong acid is added.

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  • pH and Buffers Defined

    Tutorial

    This tutorial presents a review of the definitions for pH and buffer solutions

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  • pH in the Absence of a Buffer

    Tutorial

    This tutorial describes the effects of adding strong base or strong acid to water.

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  Virtual Labs

  • Creating a Buffer Solution

    Virtual Lab

    An exercise to design a buffer solution with specific properties.

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  • DNA - Dye Binding: Equilibrium and Buffer Solutions

    Virtual Lab

    Students examine equilibrium and buffer solutions in a biological setting.

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  • Determining the pKa and Concentration Ratio of a Protein in Solution

    Virtual Lab

    Use the virtual lab to determine the pKa of a protein then create a buffer solution with a specific concentration ratio of the protein in its protonated/ unprotonated form.

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• Acid/Base Titrations

  Autograded Virtual Labs

  • Determine the Concentration of HCl using a Standardized NaOH Solution

    Autograded Virtual Lab

    Perform a titration to determine the concentration of an unknown HCl solution using a standardized solution of NaOH and KHP. (Adapted from a prelab exercise used at the University of British Columbia)

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  • Determine the Identity of an Unknown Solid Weak Acid

    Autograded Virtual Lab

    Perform an experiment to determine the molar mass and pKa of an unknown solid acid.

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  • Determine the unknown weak acid (HTML5 Beta)

    Autograded Virtual Lab

    This is a beta activity to determine the unknown weak acid

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  Virtual Labs

  • Standardization of NaOH with a KHP solution: Acid Base Titration

    Virtual Lab

    Use the Virtual Laboratory to standardize an unknown NaOH solution (approximately 0.2M) to four significant figures via titration with 25.00 mL of a KHP standard solution.

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