When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined

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When A Solid Dissolves In Water Heat May Be Evolved Or Absorbed The Heat Of Dissolution Dissolving Can Be Determined 1 (410.47 KiB) Viewed 9 times

When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. In the laboratory a general chemistry student finds that when 3.09 g of NH4Cl(s) are dissolved in 100.10 g of water, the temperature of the solution drops from 23.19 to 21.00 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.68 J/°C. Based on the student's observation, calculate the enthalpy of dissolution of NH4Cl(s) in kJ/mol. Assume the specific heat of the solution is equal to the specific heat of water. kJ/mol AH dissolution Book Cengage Leaming Thermometer Cardboard or Styrofoam lid Nested Styrofoam cups Reaction occurs in solution.