The chemical reaction shown below is carried out in a coffee cup calorimeter . A student mixes 10.0 mL of 0.100 M H 2 A(aq) and 20 mL of 0.100 MNaOH * (aq) , both initially at 25°C. The student records the highest temperature of 40.C for the reaction . H 2 A(aq)+2NaOH(aq) Na 2 A(aq)+2H 2 O(l) AH = ??? KJ/molx a. What indicates that this is an acid -base reaction ? Explain your answer . B. Determine the amount of energy involved in the reaction in the coffee cup calorimeter . The density of the resulting solution is 1.00g / m * L and has the same specific heat capacity as water , 4.2 J/ g °C c. Determine the enthalpy of the reaction , in kJ/mol r* n