A student determines the heat of dissolution of solid

Last updated: 8/5/2022

A student determines the heat of dissolution of solid potassium sulfate using a coffee-cup calorimeter of negligible heat capacity. When 8.42 g of K₂SO4(s) is dissolved in 119.00 g of water, the temperature of the solution drops from 25.00 to 22.63 °C. Based on the student's observation, calculate the enthalpy of dissolution of K₂SO4(s) in kJ/mol. Assume the specific heat of the solution is 4.184 J/gºC. AH dissolution kJ/mol