April 27, 2024, 10:18:31 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Finding binary acid formula  (Read 4150 times)

0 Members and 1 Guest are viewing this topic.

Offline PolskiKrol

  • Very New Member
  • *
  • Posts: 2
  • Mole Snacks: +0/-0
Finding binary acid formula
« on: May 10, 2008, 01:12:03 PM »
Here is the question word for word:

A binary acid, HxE consists of 2.49% H. What is the formula of this acid?

Is %H the mass percent or molar? I remember doing this sort of thing back in general chemistry, I think you have to just keep guessing and trying combinations, but I haven't gotten the answer. Any help?
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27664
  • Mole Snacks: +1801/-410
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Finding binary acid formula
« Reply #1 on: May 10, 2008, 02:02:09 PM »
It is a mass percent. You know molar mass of H, now it is a little bit of trial and error - find molar mass of E for x=1,2,3 and see if anything fits.
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline PolskiKrol

  • Very New Member
  • *
  • Posts: 2
  • Mole Snacks: +0/-0
Re: Finding binary acid formula
« Reply #2 on: May 10, 2008, 06:45:27 PM »
H2Se fits well, 2.52% H

However, H3Sb fits  better, 2.48% H,  but I wonder if it exists.
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27664
  • Mole Snacks: +1801/-410
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Finding binary acid formula
« Reply #3 on: May 10, 2008, 07:11:35 PM »
Generacl chemistry book or wikipedia will be helpful in this case :)
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info
Pages: [1]   Go Up
« previous next »
Sponsored Links