Honors Chemistry I Core Labs

Links:

Purpose:
To determine the percent water in a hydrate and calculate the water of hydration.

Summary:
Students heat a known hydrate (CuSO₄·5H₂O) to dryness and calculate the ratio of water to hydrate. The procedure is repeated with an unknown hydrate (BaCl₂·2H₂O).

Objectives Links:
2. C: Molarity & Mass Conservation

Process Skills Checklist

Materials:

• CuSO₄·5H₂O
• BaCl₂·2H₂O
• burner apparatus
• beaker
• tongs
• watch glass
• balance

Safety Concerns:
Goggles and aprons; open flame is used; chemicals may be toxic if ingested

Revision Date:
Summer 2005