Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

daniceko

Help? ill give medal :) Show your work Write a balanced net ionic equation for the following reaction. H3PO4(aq) + Ca(OH)2(aq) Ca3(PO4)2(aq) + H2O(l)

  • one year ago
  • one year ago

  • This Question is Closed
  1. daniceko
    Best Response
    You've already chosen the best response.
    Medals 0

    @kelly226 can you help

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

    I'll help :) So you want to try and have the same number of each element on each side. This is a pretty tricky one. It looks like you have twice as many P on the right as on the left side. So try adding a 2 in front of H3PO4 on the left side as a starter!

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

    This is really confussing for me so now i have 2 H3PO4(aq) + Ca(OH)2(aq) Ca3(PO4)2(aq) + H2O(l)

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

    If you're REALLY confused, you should start with easier questions, this one's pretty tricky. So good now try the same thing with Ca. You have 3 Ca on the right and 1 on the left.

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

    So would i put the 2 in front of the Ca like this? 2 H3PO4(aq) + 2Ca(OH)2(aq) Ca3(PO4)2(aq) + H2O(l) and btw there is no easier questions on the packet this is the only one like this

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

    3* :) not 2 this time

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

    So: 2 H3PO4(aq) + 3Ca(OH)2(aq) -> Ca3(PO4)2(aq) + H2O(l) Now count your H's and O's on both sides and see if they're the same.

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

    I think the Os are the same but are the Hs the same

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

    So do it carefully. 2H3PO4 has 2*3 = 6 H and 2*4=8 O 3Ca(OH)2 has 3*2 = 6 H and 3*2 = 6 O So the left side has 14 O and 12 H Ca3(PO4)2 has 4*2 = 8 O H2O has 2H and 1 O So the right side has 9 O and 2 H So the right side has way less Os and Hs. Can you figure out how to balance that out?

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

    In order to balance it out i have to add 5 o and 10 H some how right

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

    Exactly! How can you get that?

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

    Hint: use H2O

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

    could i add 5 to the H2O n the right end

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

    Yes :) When you're adding 5 make sure you're adding 5 to 1. So the final thing should be 6H2O.

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

    Yay :) so now I have 2 H3PO4(aq) + 3Ca(OH)2(aq) -> Ca3(PO4)2(aq) + 6H2O

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

    That's the final answer! You can check it by counting everything of course. I started with P and Ca because they're only present in one of the compounds on each side, so they're easier to balance. Try to do the same when working on other problems.

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

    Thank You so much your a genious :) But what about earlier when they were un equal bc of 5 o and 10 H I added the 5 ut what about the 10

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

    Kinda hard to understand you there :P But you added 5 H2O. So you added 5*2=10 H and 5 O. Exactly what you needed.

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

    Ok I understand now thank you so much for your help

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

    You are very welcome

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

    That's what he wrote. Except an arrow instead of the = sign. It's a reaction, not an equation.

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

    wait is there (aq) in the final equation?

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

    @BluFoot is there (aq) in the final equation?

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

    The states don't change when you balance the equation. So 2 H3PO4(aq) + 3Ca(OH)2(aq) -> Ca3(PO4)2(aq) + 6H2O (l) is correct

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

    oh ok thanks

    • one year ago
    • Attachments:

See more questions >>>

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.