Question

Thermodynamics of the Dissolution of Borax

Data:

Concentration of HCl titrant: .1481 M

TEST SOLUTION 1

Preparation of Borax Sample

Volume of Sample (mL): 5.0

Temperature of sample:49.99 degrees C

ANALYSIS

buret reading, final:44.6 mL

buret reading, initial:15.8 mL

Volume of HCl added: 28.2 mL

CALCULATIONS

A. Temperature in K=?

B. 1/T (K^-1)=?

C. mol HCl used=?

D. mol B4O5(OH)4^2- =?

E. [B4O5(OH)4^2- (M) =?

F. Solubility of borax (M) =?

G. Solubility product, Ksp=?

H. ln Ksp=?