Consider the dissolution of ammonium nitrate according to the following equation: NH,NO3(s) → NH, (aq) + NO; (aq) When 10.0 g of ammonium nitrate, NH,NO;, is dissolved in 98.5 g of water, the temperature solution decreases from 20.0°C to 13.2°C. (a) Calculate the heat lost by the solution. (Note that the mass of the solution is the mass of water plus NH,NO;, and assume that the specific heat of the solution is 4.18 J/g.°C) (b) If the heat capacity of the calorimeter is 20.0 J/°C, how much heat is lost by the calorimeter? (c) What is the total amount of heat absorbed by the system – that is, the dissolution of ammonium nitrate? (d) Calculate the enthalpy of solution of ammonium nitrate.

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Consider the dissolution of ammonium nitrate according to the following equation:
NH,NO;(s) → NH,"(aq) + NO; (aq)
When 10.0 g of ammonium nitrate, NHẠNO3, is dissolved in 98.5 g of water, the temperature solution
decreases from 20.0°C to 13.2°C. (a) Calculate the heat lost by the solution. (Note that the mass of the
solution is the mass of water plus NH,NO, and assume that the specific heat of the solution is 4.18
J/g.°C) (b) If the heat capacity of the calorimeter is 20.0 J/°C, how much heat is lost by the calorimeter?
(c) What is the total amount of heat absorbed by the system – that is, the dissolution of ammonium
nitrate? (d) Calculate the enthalpy of solution of ammonium nitrate.
Transcribed Image Text:Consider the dissolution of ammonium nitrate according to the following equation: NH,NO;(s) → NH,"(aq) + NO; (aq) When 10.0 g of ammonium nitrate, NHẠNO3, is dissolved in 98.5 g of water, the temperature solution decreases from 20.0°C to 13.2°C. (a) Calculate the heat lost by the solution. (Note that the mass of the solution is the mass of water plus NH,NO, and assume that the specific heat of the solution is 4.18 J/g.°C) (b) If the heat capacity of the calorimeter is 20.0 J/°C, how much heat is lost by the calorimeter? (c) What is the total amount of heat absorbed by the system – that is, the dissolution of ammonium nitrate? (d) Calculate the enthalpy of solution of ammonium nitrate.
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