DRAFT: This module has unpublished changes.

Data Analysis Calculations

 

1. Mass of the dried precipitate from the mass of the empty crucible and the mass of the crucible with the dried precipitate:

 

empty crucible = 36.263 g

crucible with dried precipitate = 38.126 g 

 

38.126g - 36.263g = 1.863 g

 

 

2. Number of moles of precipitate from its mass and formula weight:

 

 

3. Number of moles of sulfate ions in the precipitate from the number of moles of precipitate:

 

 

4. Mass of the sulfate ions from the number of moles of sulfate ions:

 

 

5. Theoretical percentage of sulfate content in the unknown sulfate sample:

 


DRAFT: This module has unpublished changes.