Standard enthalpies of formation of a reaction!

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Regina Chi 2K
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Standard enthalpies of formation of a reaction!

Postby Regina Chi 2K » Wed Jan 28, 2015 6:09 pm

This is actually specific to a problem in the textbook (7.53). It asks us to find the final temperature for a reaction. However, the part that I do get is how they came up with their value of the standard enthalpy of formation. A few values were not given in the back of the book and I do not understand exactly where their values came from and why there are two exact same values that end up canceling each other out. Any clarification would be nice!

Chem_Mod
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Re: Standard enthalpies of formation of a reaction!

Postby Chem_Mod » Thu Jan 29, 2015 1:25 am

Split the aqueous species into ions, and the solution in the manual will make more sense.

The value that cancels itself is the enthalpy of Cl- ions since they are present on both sides of the reaction.


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