A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Which of these reactions are endothermic reactions? a. SOCl2(l) + H2O(l) → SO2(g) + 2 HCl(g) ΔH = +10.3 kJ b. PCl3(l) + 1/2 O2(g) → POCl3(l) ΔH = -325.7 kJ c. P(s) + 3/2 Cl2(g) → PCl3(l) ΔH = -306.7 kJ d. 2 Cl2(g) + 2 H2O(l) → 4 HCl(g) + O2(g) ΔH = +202.6 kJ

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

    what is mean of endothermic reactions?

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

    Endothermic Reactions A system of reactants that absorbs heat from the surroundings in an endothermic reaction has a positive ΔH

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

    @anitasonia98 can you help me with this i dont understand it at all

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

    @nechirwan okay i get the positive thing but that would still leave A and D as options for the answer

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

    so the other are exothermic reaction !!

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

    Sure! Endothermic reactions have a positive delta H, since they draw in heat for the reaction to take place. Exothermic have a negative delta H, since they release heat. So you've narrowed down your choices to two answers. I think it's a matter of googling these two reactions :3 I would say D, but I'm not sure.

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

    @anitasonia98 thank you! :)

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

    exothermic reaction releases heat meaning it associate its self with a negative sign and endothermic reaction needs energy and associates itself with + sign

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

    @twelveroses Np! Google is your best friend with some of these questions :)

  10. 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.