How do I work out standard enthalpy change of solution??

    • Thread Starter

    Name:  image.jpg
Views: 26
Size:  511.4 KB

    Cs+ = -276
    F-= -483
    Lattice energy =-747
    Compound= CsF(s)

    Could someone go through the steps ?
    Attached Images
    • Thread Starter

    Didn't mean to have two same pictures XD

    (Original post by Hazel99)
    Didn't mean to have two same pictures XD
    To dissolve an ionic compound there are two energy steps involved:

    1. The lattice enthalpy of the compound (this gives gaseous ions) which must be endothermic (some syllabuses define an exothermic lattice enthalpy).
    2. The hydration enthalpy of all of the ions, which is an exothermic process.

    The enthalpy of solution is 1 + 2
Write a reply… Reply
Submit reply


Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. Oops, you need to agree to our Ts&Cs to register
  2. Slide to join now Processing…

Updated: October 12, 2016
TSR Support Team
Electronic notes or handwritten notes?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.