Question

The dissolution of barium hydroxide in water is an exothermic process. Which of the following statements...

The dissolution of barium hydroxide in water is an exothermic process. Which of the following
statements is correct?
A) The enthalpy of solid barium hydroxide plus pure water is less than that of the solution, at the
same temperature.
B) The enthalpy of solid barium hydroxide plus pure water is greater than that of the solution, at the
same temperature.
C) The enthalpy of solid barium hydroxide plus pure water is the same as that of the solution, at the
same temperature.
D) The temperature of the solution is lower than of the barium hydroxide and water before mixing.

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