1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Some Questions

  1. Dec 6, 2005 #1
    1. Why does the dissolution of NH4NO3 happen if the ∆H is 28.1? I'm supposed to be detailed with an equation, and explaining spontaneity.

    Does it happen because of the energy created from protonation?

    2. And why is only a strong base able to make H3PO4 act as an acid after the 3rd acid dissociation?

    Is it because it is electronically unfavorable?
     
    Last edited: Dec 6, 2005
  2. jcsd
  3. Dec 7, 2005 #2

    GCT

    User Avatar
    Science Advisor
    Homework Helper

    1) at constant temperature and pressure what concept relates to sponaneity (depends on both entropy and enthalpy of process).

    2)In terms of a base, how strong is PO4^2- compared to H2PO4^-1? What is the Arrehnius concept of an acid base neutralization in perspective of the conjugate acid/bases?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook




Loading...
Similar Threads for Questions Date
Electrophoresis question Mar 12, 2018
Ion IO3- and CHCl3 questions Mar 11, 2018
Katharometer Question Mar 10, 2018
Net Ionic Lab Question (the lab procedure) Feb 28, 2018
Moles question Feb 11, 2018