A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

vera_ewing

  • one year ago

chem

  • This Question is Closed
  1. vera_ewing
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

  2. vera_ewing
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @rvc

  3. rvc
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i dont know this i havent revised :(

  4. vera_ewing
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Hoslos

  5. sweetburger
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Im thinking [x]/[.25][.25]=3.0x10^-3 which becomes x=.003x.0625=.00019 which is equivalent to 1.9x10^-4M being the concentration of Fe3+. If you are wondering why there is only one x in the numerator it is because the Ag is a solid and therefore falls out of the equation.

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Use Kc= (concentration of product1^mol * concetration of product2^mol)/(concentration of reactant1^mol * concentration of reactant 2^mol) Also, take note that Kc works for Aqueous substances only.

  7. vera_ewing
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Hoslos So the answer is A?

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Making substitutions, we get 3*10^-3= (Fe3+)^1/(0.25^1 * 0.25^1) Fe3+= 0.625* (3*10^-3)= 1.875*10^-3 or A.

  9. vera_ewing
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Thank you!

  10. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Fe3+= 0.0625 * 0.003= 1.875*10^-4 or A.

  11. sweetburger
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Looks good :)

  12. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes, was because of the mistake in the significant figures.

  13. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.