In an experiment, 50 cm3 of a solution of HCl with a concentration of 1 mol dm−3 was reacted with 50 cm3 of a solution of NaOH with a concentration of 1 mol dm−3. The temperature of the solution increased by 12 °C. Calculate the temperature rise if 50 cm3 of the same HCl solution was reacted with
50 cm3 of a solution of NaOH with a concentration of 0.5 mol dm-3.
a. 6 °C
b. 12 °C
c. 24 °C
d. 3 °C