November 25, 2024, 03:27:09 AM
Forum Rules: Read This Before Posting


Topic: Acid Base Titration Question  (Read 5424 times)

0 Members and 1 Guest are viewing this topic.

Offline jcais

  • Regular Member
  • ***
  • Posts: 22
  • Mole Snacks: +2/-2
  • Gender: Female
  • I'm a mole!
Acid Base Titration Question
« on: March 16, 2006, 11:14:09 AM »
Hello,

I was wondering if someone could help me solve this problem?

A common way to standardize NaOH is to tirate dry KHP. KHP is a 1-H acid, C8H5O4K that can be dried completely (all water removed). You begin an experiment to standardize a NaOH solution by weighing out 2.345 g of KHP. You put the KHP in a beaker, add some distilled H2O and indicator, and begin to titrate. You find that it takes 48.76 ml or .04876 L of NaOH to reach endpoint. What is the concentration of your NaOH solution?
aCaVa = bCbVb
I cannot find the Ca and the Va. I know I can find moles using the molec weight of KHP, but what good will this do me? Is the Va 0 ml b/c it is dry? I don't even know why C8H5O4K was added to the problem.

Thank you for your time.

Online Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27862
  • Mole Snacks: +1813/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re:Acid Base Titration Question
« Reply #1 on: March 16, 2006, 12:41:37 PM »
Start with reaction equation.

And NEVER try to use the equation you don't understand. aCaVa=bCbVb may be right, but may be not.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Sponsored Links