January 06, 2025, 05:51:27 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Help Finding the Empirical Formula  (Read 925 times)

0 Members and 1 Guest are viewing this topic.

Offline Paanta

  • New Member
  • **
  • Posts: 3
  • Mole Snacks: +0/-0
Help Finding the Empirical Formula
« on: April 29, 2021, 11:29:03 AM »
This is a question that I got for Chemistry Homework:

Find the empirical formula for the following compounds: 69.94% Fe, 30.06% O

Here is my answer:

Fe0.6994/0.3006O0.3006/0.3006

(Fe2.33O1)*3

Final Result: Fe7O3

Is this right? If not can someone please tell me what I did wrong?
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27891
  • Mole Snacks: +1816/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Help Finding the Empirical Formula
« Reply #1 on: April 29, 2021, 12:13:19 PM »
You need to follow molar ratio, not mass ratio.
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline Orcio_87

  • Full Member
  • ****
  • Posts: 440
  • Mole Snacks: +39/-3
Re: Help Finding the Empirical Formula
« Reply #2 on: April 29, 2021, 01:06:15 PM »
Quote
Find the empirical formula for the following compounds: 69.94% Fe, 30.06% O
Fe7O3 would be too simple. I think that this is the mass concentration (100 g of compound contains 69,94 g Fe and 30,06 g O).
« Last Edit: April 29, 2021, 01:17:49 PM by Orcio_Dojek »
Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links