500 mL of 0.22 M HCl and 500 mL of 0.20 M NaOH were added to a calorimeter. Assume both substances have a density of 1 g/mL and a specific heat capacity of 4.184 J/g°C. The temperature of the entire system rose from 25.6°C to 26.7°C. Calculate the heat of reaction in units of kJ per mole of HCl.