Lab: Determining the Composition of a Hydrate
For students in Grades 8-12.
Hydrates are ionic compounds that have a number of water molecules attached as part of their structure. The water is present in a definite and consistent ratio. When hydrates are heated, the water is released from the compound as water vapor.
In this lab, the student will determine the percentage of water in the hydrate by comparing the mass of the hydrate to the mass of the anhydrous salt. The hydrate being used in this experiment is copper (II) sulfate “x”hydrate. When heated, the copper sulfate will lose the water and turn from a blue color to a white color.
1. To determine the percentage of water in a hydrate.
2. To determine the correct formula of copper (II) sulfate hydrate.
MATERIALS AND EQUIPMENT:
Evaporating dish, Crucible Tongs, Wire gauze, Microspatula, Bunsen burner, Balance, Safety Goggles, Ring Stand and ring , Lab apron, Copper (II) sulfate hydrate .
The four-page student handout includes:
Introduction, Purpose, Materials List, Safety Precautions, Procedure, Data Table, Calculations and Analysis Questions.
The three-page teacher guide includes:
Tips and suggestions, Solutions to the calculations, and answers to all questions.
All of my labs can be viewed by clicking this link.
Related products include:
Naming Compounds and Writing Formulas Worksheet
Writing Chemical Formulas and Balancing Equation Worksheet
Writing Formulas and Naming Compounds Practice Problems
Writing Chemical Formulas and Naming Compounds Set of 4 Quizzes or Homework Assignments
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