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When ammonium chloride is dissolved in water, the solution becomes colder.

What can you say about the relative magnitudes of the lattice energy of ammonium chloride and its heat of hydration?

Why does the solution form? What drives the process?

  • Chemistry -

    The lattice energy is greater in magnitude than the heat of hydration. but what about the Last question?

  • Chemistry -

    It takes more energy to break the bonds of the lattice than is derived from the heat of hydration in forming the hydrated ions.

  • Chemistry -

    The solution forms because of that?

  • Chemistry -

    b. Delta S outweighs the overall process.

  • Chemistry -

    Im still confused

  • Chemistry -

    Johannie -- this is Samantha's question. Why are you horning into her question?

  • Chemistry -

    Well Ms. Sue, both Johannie and I were using this computer and I didn't realize her name was still on the name line.

  • Chemistry -

    Latice energy is in coralative respondance to the change in heat of the system once the action has undergone previous catalysmic aids. Think of it like this, say you have a tennis ball, now, put that tennis ball in a .5 molarity solution of hydrochloric acid. What happens? RIGHT, the tennis ball becomes blue, and the bounce has been increased significantly. Hydrochloric acid has chemical make-up known to decrease the coefficient of friction significantly. Simply remember that ammonium chloride has similar make-up to that of hydrochloric acid, and you have your anser. Heat of hydration has similar relatives to that of a toaster. You open a toaster and heat excapes (exothermic if you would) now simply find the molar fraction of ammonium chloride and then divide it by the specific heat of water and "WALAH" heat of hydration.
    -DR. Billy Walton (MIT)

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