Convert to Picture Shapes Text Arrange Quick sh SmartArt Box Styles 3. When 21.45 g of potassium nitrate was dissolved in water in a calorimeter, the temperature fell from 25.00°C to 14.14°C. If the heat capacity of the calorimeter and its contents is 682 J/°C, what is AHpn for the dissolution of potassium nitrate, in kJ/mol? Write the equation for this reaction: Is it exothermic or endothermic? Draw the enthalpy diagram for the dissolution of KNO3