What This Document Is
This document is a chemistry lab report focused on solution preparation and concentration, specifically addressing the challenge of recreating a specific shade – “Pirate purple” – through dye mixing. It explores the fundamental concepts of solutions, solvents, solutes, and molarity as they relate to creating a colored solution with a desired absorbance. The report details an experimental investigation into determining the correct proportions of red and blue dyes needed to achieve the target color.
Why This Document Matters
This lab report is essential for students in General Chemistry I (CHEM 1150) at East Carolina University. It’s used to apply theoretical knowledge of solution chemistry to a practical, real-world problem. Understanding how to prepare solutions of specific concentrations is a foundational skill in chemistry, crucial for numerous experiments and applications. This report demonstrates the connection between color, absorbance, and the molarity of a solution.
Common Limitations or Challenges
This document focuses on the *principles* behind solution preparation and the *process* of determining dye concentrations. It does not provide a ready-made recipe for Pirate purple dye. Users will still need to perform the experiments outlined in the full report and analyze their own data to determine the exact quantities of red and blue dye required. It also assumes a basic understanding of laboratory equipment like a colorimeter and software like LoggerPro.
What This Document Provides
The full document includes:
* An explanation of solution terminology (solvent, solute, molarity).
* The relationship between molarity and absorbance, including the relevant equation (absorbance = molarity*(slope) + y-intercept).
* A description of the experimental procedure for measuring the absorbance of red and blue dyes using a colorimeter and LoggerPro.
* The dilution formula (Mi*Vi = Mo*V2) and its application to concentration calculations.
* Details on how to determine the molarity of each dye and convert it to g/L.
* An investigation into the proper proportions of red and blue dye to create the target purple color.
This preview *does not* include the experimental data, calculations, or the final determined recipe for 1-L of Pirate purple dye. It also does not include the graphical analysis or specific wavelength settings used in the experiment.
