DRAFT: This module has unpublished changes.

Calculations

 

 

Amount of NaOH to reach equivalence point:

Trial 1:

 

Trial 2:

 

Trial 3:

 

 

Amount of HCl used by the sample:

Trial 1:

0.0081molHCl - 7.88x10^-3molHCl= 7.70*10^-3 molHCl

 

Trial 2:

0.0081molHCl - 5.11x10^-3molHCl= 2.9*10^-3 molHCl

 

Trial 3:

0.0081molHCl - 5.58x10^-3molHCl= 2.5*10^-3 molHCl

 

 

Amount of CaCO3 in the sample:

Trial 1:

 

Trial 2:

 

 

Trial 3:

 

 

Average CaCO3 content:

 

 

 

 

 

 

DRAFT: This module has unpublished changes.