Thermodynamics of Borax Solubility.pdf - Pre-lab Questions...

This preview shows page 1 - 2 out of 2 pages.

Pre-lab Questions1. A student who is performing this experiment pours an8.50 mL sample of the saturatedborax solution into a 10 mL graduated cylinder after the borax solution had cooled to acertain temperature T. The student rinses the sample into a small beaker using distilledwater, and then titrates the solution with a 0.500 M HCl solution. 12.00 mL of the HClsolution is needed to reach the endpoint of the titration. Calculate the value of Ksp forborax at temperature T. (Answer: 0.176 Show your work.)Here is a suggested procedure for doing this calculation:(a) Calculate the number of moles of HCl that were added during the titration.
(b) Use reaction (2) in the lab manual to relate the number of moles of HCl to the number ofmoles of tetraborate ions in the 8.50 mL sample.
(c) Calculate the concentration of tetraborate ions in the 8.50 mL sample.
End of preview. Want to read all 2 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Fall
Professor
DAVIDSRULEVITCH
Tags
Chemistry, Borax

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture