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July 23, 2014

Homework Help: Chemistry

Posted by Johnny on Wednesday, March 9, 2011 at 11:09pm.

When 100mL of 1.00 M Ba (NO3)2 and 100 mL of 1.00 M Na2SO4, both at 25 degrees celsius, are mixed in a constant pressure calorimeter, a white precipitate is formed and the temperature rises to 28.1 degrees celsius.

A. What is the precipitate?
B. If all of the heat is absorbed by the solvent (water), what is the molar enthalpy change for the reaction.
(s for water = 4.18 J/g.C)

I really want to understand this problem so if someone could show me step by step I would really appreciate it so much!

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