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18 Nov 2019
There is 2questions,!
a) A student added 1.250 g of solid ammonium nitrate, NH_4 NO_3, to 45.0 g of water in a polystyrene coffee cup. The temperature of the water fell from 27.20 to 25.00 degree C. Estimate the enthalpy of dissolution of ammonium nitrate, i.e. NH_4NO_3(s) rightarrow NH_4NO_3 (aq) (Assume that the heat capacity of the coffee cup and thermometer is zero and that the heat capacity of the ammonium nitrate solution is the same as that of water, C_sol'n = 4.184J g^-1 K^-1.) b) What is the entropy for the dissolved ammonium cations (S degree = 111.2 J/mole middot K) in the calorimeter? Assume the density of the solution is 1.00 g/ml.
There is 2questions,!
a) A student added 1.250 g of solid ammonium nitrate, NH_4 NO_3, to 45.0 g of water in a polystyrene coffee cup. The temperature of the water fell from 27.20 to 25.00 degree C. Estimate the enthalpy of dissolution of ammonium nitrate, i.e. NH_4NO_3(s) rightarrow NH_4NO_3 (aq) (Assume that the heat capacity of the coffee cup and thermometer is zero and that the heat capacity of the ammonium nitrate solution is the same as that of water, C_sol'n = 4.184J g^-1 K^-1.) b) What is the entropy for the dissolved ammonium cations (S degree = 111.2 J/mole middot K) in the calorimeter? Assume the density of the solution is 1.00 g/ml.
Nelly StrackeLv2
16 May 2019