A series of collaborative learning activities and accompanying text that develop chemical equilibrium, including acid-base chemistry, formation of water-soluble complexes, and solubility are provided. These activities are intended to be done in […]
b. Acid-base equilibria
Students explore calculating the pH of weak acids and bases, buffers and neutralization reactions. A text to accompany the exercise is also provided.
Students explore basic concepts of chemical equilibrium calculations when completing this activity.
Students will learn to:
Recall basic calculations and definitions about acid-base chemistry.
Interpret the pH scale and use Kw to draw relationships between [H+] and [OH–].
Write reactions represented by Ka and Kb for monoprotic acids.
Interpret the magnitudes of Ka and Kb.
Identify conjugate acid-base pairs.
Calculate the pH of strong acid, strong base, weak acid and weak base solutions
Determine when using the quadratic formula is necessary to determine the pH of a solution.
Find the fractions of association for weak acids and weak bases
Students explore basic concepts of acid-base chemistry when completing this activity.
Students will learn to:
Calculate the pH of a solution containing strong and/or weak acids and/or bases.
Assess the reasonableness of a calculated pH of an acid/base solution.
Students explore basic concepts of acid-base chemistry and buffers when completing this activity.
Students will learn to:
Identify a buffer solution.
Calculate the pH of a buffer solution.
Calculate the amount of reagents required to prepare a buffer solution.
Design an acid/base titration
Choose a proper acid/base indicator
Students will learn:
Write the neutralization reaction between an acid and base.
Determine if a neutralization reaction goes to completion.
Calculate the equivalence point of a titration.
Use stoichiometry to determine the dominate species present after a neutralization reaction.
Introduction These assignments are designed to be capstone activities at the end of units on figures of merit (such as sensitivity and LOD), acid-base equilibria, separations, spectroscopy, mass spectrometry, and electrochemistry. Each […]