December 27, 2024, 03:09:20 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Buffer question  (Read 4468 times)

0 Members and 1 Guest are viewing this topic.

Offline gidget

  • New Member
  • **
  • Posts: 3
  • Mole Snacks: +0/-0
  • Gender: Male
Buffer question
« on: March 27, 2009, 12:44:39 PM »
Our professor gave us some questions to look at about buffers in preparation for a quiz and I'm stuck on how to solve this:

What is the pH of the buffer formed by adding 100mL of 0.150M KHP to
a) 100mL of 0.0800M NaOH
b) 100mL of 0.0800M HCl

Thanks in advance for you *delete me*
Logged

Online Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27887
  • Mole Snacks: +1816/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Buffer question
« Reply #1 on: March 27, 2009, 02:29:41 PM »
Do you know any equations describing buffer pH?
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline gidget

  • New Member
  • **
  • Posts: 3
  • Mole Snacks: +0/-0
  • Gender: Male
Re: Buffer question
« Reply #2 on: March 27, 2009, 02:37:08 PM »
the only thing i can think of to do is to use pH=pKa + log [A]/[HA] but we arent given the ka
Logged

Online Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27887
  • Mole Snacks: +1816/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Buffer question
« Reply #3 on: March 27, 2009, 05:35:18 PM »
So you have to look it up. No other way of solving the question.
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info
Pages: [1]   Go Up
« previous next »
Sponsored Links