When 50.0 mL of 1.0 mol/L hydrochloric acid is neutralized

Last updated: 7/11/2022

When 50.0 mL of 1.0 mol/L hydrochloric acid is neutralized completely by 75.0 mL of 1.0 mol/L sodium hydroxide in a coffee-cup calorimeter, the temperature of the total solution changes from 20.2 °C to 25.6 °C. Determine the quantity of energy transferred, q, and state whether the reaction was endothermic or exothermic. [ans: 2800 J; exothermic)