If in a "coffee cup" calorimeter the 0.050 mol of hydrochloric acid, HCl is mixed with the 0.050 mol of sodium hydroxide, NaOH, then the temperature of 50.0 g of the resulting solution increases from 25.0ºC to 31.5ºC. Analyze the quantity of energy involved in the reaction. Explain, is the reaction endothermic or exothermic if the specific heat of the solution is 1.00 cal / g solution ºC.