DRAFT: This module has unpublished changes.

Parameter

Trial 1

Trial 2

Trial 3

Concentration of NaOH solution (M)

0.097

0.097

0.097

Volume of NaOH solution to reach the equivalence point (mL)

10.844

9.438

4.144

Amount of NaOH to reach the equivalence point (mol)

0.00105

0.000915

0.000402

The excess amount of HCl removed by the added NaOH (mol)

0.00105

0.000915

0.000402

Concentration of the HCl solution (M)

0.0793

0.0793

0.0793

Total amount of HCl added to solution (mol)

0.00793

0.00793

0.00793

Amount of HCL used by CaCO3 (mol)

0.00688

0.00701

0.00752

Amount of CaCO3 in sample (mol)

0.344

0.351

0.376

Amount of CaCO3 in sample (g)

1.083

1.005

1.002

CaCO3 content in sample (%)

31.8

34.9

37.5

Average CaCO3 content in sample (%)

34.7

34.7

34.7

 

DRAFT: This module has unpublished changes.