When 400 mL of 0.2 M H₂SO₄ solution is mixed with 600 mL of 0.1 M NaOH solution, the increase in temperature of the final solution is __________ $\times$ 10^$-$2 K. (Round off to the nearest integer).

[Use : H⁺ (aq) + OH^$-$ (aq) $\to$ H₂O : $\Delta$_$\gamma$H = $-$57.1 kJ mol^$-$1]

Specific heat of H₂O = 4.18 J K^$-$1 g^$-$1

density of H₂O = 1.0 g cm^$-$3

Assume no change in volume of solution on mixing.