Ethyl acetate is a solvent used for recrystallization processes. Ethyl acetate has a specific heat of 0.455 cal/g•°C. Calculate the heat energy lost in the cooling process when 111 g of ethyl acetate was heated to its boiling point (77.1°C) to dissolve a sample and then cooled down to room temperature (25.0°C). Assume that the specific heat does not change.

• A. –1.23×10³ cal
• B. +1.23×10³ cal
• C. –2.63×10³ cal
• D. +2.63×10³ cal

Answer: (C)