This is the document for the determination of the percent acetic acid in an unknown solution lab.

In this lab activity, students will determine the concentration of a solution of NaOH by titration with a standard solution of HCl. They will also determine the concentration of a sample of white vinegar by titration with a standard solution of NaOH.

Part of NCSSM CORE collection: This is the document for the conductivity titration of Ba(OH)2 with H2SO4.

Sample Learning Goals
Describe the relationships between volume and amount of solute to solution concentration
Explain qualitatively the relationship between solution color and concentration
Predict and explain how solution concentration will change for adding or removing: water, solute, and/or solution
Calculate the concentration of solutions in units of molarity (mol/L)
Design a procedure for creating a solution of a given concentration
Identify when a solution is saturated and predict how concentration will change for adding or removing: water, solute, and/or solution
Describe the relationship between the solution concentration and the intensity of light that is absorbed/transmitted
Describe the relationship between absorbance, molar absorptivity, path length, and concentration in Beer’s Law
Predict how the intensity of light absorbed/transmitted will change with changes in solution type, solution concentration, container width, or light source, and explain why

Part of NCSSM CORE collection: This is the student document for the bleach analysis lab.

Watch your solution change color as you mix chemicals with water. Then check molarity with the concentration meter. What are all the ways you can change the concentration of your solution? Switch solutes to compare different chemicals and find out how concentrated you can go before you hit saturation! Review teacher-submitted activities for ideas on embedding this interactive into lessons.

In this inquiry-based lab activity, students design an experimental process using their knowledge of molarity and dilutions to make a HCl solution from concentrated HCl.

This series of simulation activities guides students through weak acid strong base titrations. Students will find the concentration and/or pKa of the solutions.

This brief video lesson examines the role of the mole in chemistry -- and how something so big can be sued to calculate the tiniest particles in the world. This video could serve as a base introduction to mole ratios and molarity of solutions. Discussion/assessment questions and suggested supplemental resources are also included.

Students will create different concentrations of sweet tea and vote on which tastes best. The concepts of dilution, molarity and converting from grams to moles will be reviewed.

Students will create different concentrations of sweet tea and vote on which tastes best. The concepts of dilution, molarity and converting from grams to moles will be reviewed.

In this chemistry lab activity, students will apply what they learned from titrating and graphing a strong acid (HCl) with a strong base (NaOH) to a titration involving a strong base and a weak acid. Before performing the titration students will be asked to predict how the end point of the titration will shift. They will collect data and graph it in the same way they did in the earlier titration, determine the end point, and note how it shifted. Finally they will be asked to apply their understanding of the definitions of "strong" and "weak" as applied to acids and bases to explain the observed shift. Students will produce an informal lab report that includes a prediction, data table, graph, and analysis.

Sample Learning Goals
Describe the relationships between volume and amount of solute to concentration.
Explain how solution color and concentration are related.
Calculate the concentration of solutions in units of molarity (mol/L).
Use molarity to calculate the dilution of solutions.
Compare solubility limits between solutes.

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This introduction to the lab Parabens in Household Products discusses what the students will do and gain from the activity. The introduction also discusses learning opportunities, assessments, and extensions to the lab.

In this laboratory investigation students will use gas chromatography or liquid chromatography to investigate preservative chemicals found in household products-parabens.

This document is the student pre-lab sheet for the "Parabens in Common Household Products".

In this online lesson, students define solubility and list factors that affect it. They will also define concentration and explain how to calculate it.