Last week, Hank talked about how stuff mixes together in solutions. Today, …
Last week, Hank talked about how stuff mixes together in solutions. Today, and for the next few weeks, he will talk about the actual reactions happening in those solutions - atoms reorganizing themselves to create whole new substances in the processes that make our world the one we know and love. This week, we focus on acids and bases and their proton-exchanging ways.
Chapters: Chemistry Can Cause Death Acids and Bases are Complicated Conjugate Bases Conjugate Acids Acid-Base Stoichiometry Review
How do strong and weak acids differ? Use lab tools on your …
How do strong and weak acids differ? Use lab tools on your computer to find out! Dip the paper or the probe into solution to measure the pH, or put in the electrodes to measure the conductivity. Then see how concentration and strength affect pH. Can a weak acid solution have the same pH as a strong acid solution?
In this activity, students use the virtual lab to create 500mL of …
In this activity, students use the virtual lab to create 500mL of 3M HCl solution from a concentrated stock solution of 11.6M HCl. They must first calculate the correct volumes of 11.6M HCl solution and water to mix together to create the final solution. Next, they prepare the solution using the appropriate glassware, and then can check their answer using the concentration viewer in the solution info panel.
In this field-based exercise, students were given a tour of an abandoned …
In this field-based exercise, students were given a tour of an abandoned mine site and asked to utilize a set of field measurements to describe the spatial details of metal transport. This drew on previous experience with field measurements and prompted them to work together to solve an observed chemical evolution of a contaminated brook. The exercise is an excellent example for students to bring together acid-base chemistry, redox chemistry, and thermodynamic concepts together to describe a reasonably complex system. The field component was completed in a full day, but we will be expanding this next fall for a 2 day exercise (weekend). The exercise was coupled with subsequent labs to complete analysis of the water samples and accomplish speciation calculations using PHREEQCI.
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Intended Audience: This activity was used for an introductory Geochemistry class, which …
Intended Audience: This activity was used for an introductory Geochemistry class, which contained students from sophomore level to master's students. We took the trip in mid-October, about as late as possible in Vermont, after they had gained some previous field experience and lab work in addition to an in introduction to these principles in class.
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Cluster of questions on acid rain deposition. (Note: this resource was added …
Cluster of questions on acid rain deposition.
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Students research the acidification of freshwater streams and lakes, identify at least …
Students research the acidification of freshwater streams and lakes, identify at least one of the sources, and determine how their daily activities contribute to the problem.
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Acidity is a tricky concept, and it’s not always like how we …
Acidity is a tricky concept, and it’s not always like how we see it in the movies. As organic chemists, we need to know how to predict the strength of weak acids and bases. In this episode of Crash Course Organic Chemistry, we’ll learn four key factors that we can use to predict relative acidity. This important tool will help us us to predict the products of chemical reactions.
The most important property of carboxylic acids, an the one that is …
The most important property of carboxylic acids, an the one that is responsible for naming them such, is their acidity. An acid is any compound that donates a hydrogen ion (H+, also called a proton) to another compound, termed a base. Carboxylic acids to this much more readily than most other classes of organic compounds, so they are said to be stronger acids, even though they are much weaker than the most important mineral acids -- sulfuric acid (H2SO4), nitric acid (HNO3), and hydrochloric acid (HCl).
This module provides an intrioduction to acid and base chemistry. The Arrhenius …
This module provides an intrioduction to acid and base chemistry. The Arrhenius and Bronsted-Lowry concepts of acids and bases are discussed as well as the pH scale and neutralization reactions.
This is a pdf of a presentation. It can be used to …
This is a pdf of a presentation. It can be used to expand upon or introduce the topic of Acids and Bases within chemistry. It primarily goes over the basics but could be used at any point.
In this video segment adapted from ZOOM, two cast members demonstrate what …
In this video segment adapted from ZOOM, two cast members demonstrate what happens when vinegar is added to baking soda inside a container. The resulting chemical reaction produces enough carbon dioxide to launch their paper rocket skyward. Recommended for: Grades K-5
This is a review of information that should have been learned regarding …
This is a review of information that should have been learned regarding acids, bases, and pH. It is a series of questions followed by answers and explanations.
A car propelled by the reaction between lemon juice and baking soda …
A car propelled by the reaction between lemon juice and baking soda has more in common with rockets and jet aircraft than one might think. In this video segment adapted from ZOOM, two cast members demonstrate the power of rocket-propelled vehicles and how to exploit the force produced by the carbon dioxide gas. Grades 3-8.
It would seem that bottles of lemon juice and rockets have only …
It would seem that bottles of lemon juice and rockets have only their basic shape in common. However, as two cast members from ZOOM demonstrate in this adapted video segment, when baking soda is added to the mix, a plastic bottle can act very much like a real rocket. Grades 3-8.
In this section we will be talking about the basics of acids …
In this section we will be talking about the basics of acids and bases and how acid-base chemistry is related to chemical equilibrium. We will cover acid and base definitions, pH, acid-base equilibria, acid-base properties of salts, and the pH of salt solutions.
Adapt is an online homework system that exists within the LibreTexts platform. …
Adapt is an online homework system that exists within the LibreTexts platform. Instructors can create courses and assignments for students. Course shells for preparatory chemistry, general chemistry, analytical chemistry, and organic chemistry are available in the commons area.
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