A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

hpfan101

  • one year ago

Question about finding the limiting reactant. So far, I found the molar mass (g/mol) of each substance in this chemical reaction but I'm not sure what to do next. Phosphoric acid can be prepared by reaction of sulfuric acid with “phosphate rock” according to the equation: Ca3(PO4)2 + 3H2SO4  3CaSO4 + 2H3PO4 Suppose the reaction is carried out starting with 129 g of Ca3(PO4)2 and 97.4 g of H2SO4. Which substance is the limiting reactant? A) Ca3(PO4)2 B) H2SO4 C) CaSO4 D) H3PO4 E) none of these

  • This Question is Closed
  1. Zale101
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \(\bf{Step ~1}\): Use the given grams for each of the reactants and convert to moles \(\bf{Step~ 2}\): Use those mols of each reactants and convert to mols of Phosphoric acid (H3PO4). You use mole to mole ratios: For every 1 mole of reactant Ca3(PO4)2 , only 2 moles of H3PO4 is produced as products For every 3 moles of reactant 3H2SO4 , only 2 moles of H3PO4 is produced as products \(\bf{ Step ~3}\): Compare which mols of 2H3PO4 is less. The less mols of the products indicates the reactants you started with was the limiting reactant.

  2. hpfan101
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Thank you!!

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

    actual yield / theoretical yield x 100 grams - moles - grams - moles

  4. Zale101
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    No problem! :)

  5. 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.