Potassium nitrate, KNO3, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 32.3 g of KNO3 is dissolved in 243 g of water at 23.00 °C.
KNO3(s)+H2O(aq) ---> KOH(aq)+HNO3(aq)
The temperature of the resulting solution decreases to 17.90 °C. Assume the resulting solution has the same specific heat as water, 4.184 J/(g·°C), and that there is negligible heat loss to the surroundings.
1. How much heat was released by the solution?
2. What is the enthalpy of the reaction?
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