3 of 15 Correct The f calcium chloride in water is very exothermic and is used i

Question

3 of 15 Correct The f calcium chloride in water is very exothermic and is used in Thot compresses" to produce heat When the inner plastic bag of the compress is broken, the calc ium chloride dissolves in the water contained in the outer bag. The reaction is very Part C A hypothetical solution forms between a solid and a liquid. The values of the thermodynamic quanties involved in the process are shown in the following table. Action Enthalpy 15.5 kJ/mol 208 kJ/mol separation of solvent of solute-solvent interactions -88.7 kJ/mol solute Calculate the enthalpy of solution in kilojoules per mole of solute. Enter your answer numerically in kilojoules per mole of solute. View Available Hint(s) k.J/mol Submit

Explanation / Answer

Part C

Enthalpy of solution = enthalpy of separation of solute + enthalpy of separation of solvent + enthalpy of formation of solute-solvent interactions

= 15.5 + 20.8 - 88.7

= - 52.4 kJ/mol

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