Equivalence point concentration/number of moles

  • Chemistry
  • Thread starter drcasey
  • Start date
  • #1
2
0

Homework Statement


Fe[3+]+V[2+]-->Fe[2+]+V[3+]

If you start with 0.1000 M solutions and the first-named species is the titrant, what will be
the concentration of each reactant and product at the equivalence point of the titrations above? Assume that there is no change in [H+] during the titration.

Homework Equations



Keq=[V3+][Fe2+]/[V2+][Fe3+]=2.23X10^17


The Attempt at a Solution



I believe V2+ and Fe3+ will be the same at the equivalence points since that is the definition of the analyte and titrant. However, I was told that the V3+ and Fe2+ concentration is 0.1000/2. Could someone please explain why it is divided by 2 and not just 0.1000? Thank you

Homework Statement





Homework Equations





The Attempt at a Solution


Homework Statement





Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
symbolipoint
Homework Helper
Education Advisor
Gold Member
6,488
1,339
Stoichiometry should be enough. Write the balanced reaction. You are using 1 to 1 mole ratio for the reaction. How does this relate to volume of titrant and volume of analyte solution? The resulting volume, if both concentrations are 0.1000, should be.....? Think... you will see.
 
  • #3
2
0
Ok just to make sure. The total volume will be 2L? Because of that, we take 0.1000mol/2?
 
  • #4
Borek
Mentor
28,830
3,350
Ok just to make sure. The total volume will be 2L? Because of that, we take 0.1000mol/2?

Yes, just a simple dilution.
 

Related Threads on Equivalence point concentration/number of moles

  • Last Post
Replies
3
Views
13K
Replies
0
Views
1K
Replies
2
Views
6K
  • Last Post
Replies
1
Views
8K
Replies
4
Views
7K
  • Last Post
Replies
4
Views
3K
Replies
25
Views
4K
  • Last Post
Replies
10
Views
16K
Replies
19
Views
171K
Top