When 100 mL 0.2 M KOH is mixed with 100 mL 0.2 M HCl in a rigid adiabatic container, temperature of solution increase by $t_1^{\circ }\mathrm{C}$ while when 300 mL 0.1 M KOH is mixed with 300 mL 0.1 M HCl then increase in temperature is  $t_2^{\circ }\mathrm{C}$ then which one is correct? (Assume density as well as specific heat capacity of final solutions are same.)