A 20 mol% LiCl/H2O solution at 25°C is made by mixing a 25 mol% LiCl/H2O solution at 25°C with chilled water at 5°C. What is the heat effect in joules per mole of the final solution?
a. The heat effect cannot be determined with the given information.
b. 10 J/mol
c. -10 J/mol
d. The heat effect can be calculated using the enthalpy of mixing and the temperature change during mixing.