(a) When a 3.88-g sample of solid ammonium nitrate dissolves in 60.0 g of water in a
Chapter 5, Problem 5.54(choose chapter or problem)
(a) When a 3.88-g sample of solid ammonium nitrate dissolves in 60.0 g of water in a coffee-cup calorimeter (Figure 5.17), the temperature drops from 23.0 oc to 18.4 C. Calculate !lH (in k)/mol NH4N03) for the solution process NH03(s) ----+ NH4 +(aq) + N03 -(aq) Assume that the specific heat of the solution is the same as that of pure water. (b) Is this process endothermic or exothermic?
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