Zak Barger
1/14/03
Chem. Lab
Hydrated Compound Lab 1/ /03
Purpose
The purpose of this lab was to find the mole ratio of water to anhydrous salt in the hydrated compound, which was given to us. By using a Bunsen burner and other materials, my group witnessed the evaporation and change that took place with the hydrated compound.
Materials
Evaporating dish, Bunsen burner apparatus, crucible tongs, hydrated compound
Pre-lab Calculations
- Molar mass of anhydrous sulfanilic acid = 172 g/mol
- Mass of water = 18 g
- Mass percent of water in the hydrated sulfanilic acid = .3139 > 31%
- Ratio of moles of water to moles of anhydrous sulfanilic acid = 30/170 g/mol
- Empirical formula of hydrated sulfanilic acid = N6 H12 C36 H29 S6 O18
