1 molal aqueous solution of an electrolyte $A_2{B}_3$ is 60% ionized. The boiling point of the solution at 1 atm is ______ K (Rounded off to the nearest integer)

$A_2{B}_3\to 2A^{+3}+3B^{-2}$
$A_2{B}_3 \alpha =\frac{60}{100}=0.6$
$x=\frac{i-1}{n-1}$
$0.6=\frac{\mathrm{i}-1}{5-1}$

$4\times 0.6=i-1$

$\mathrm{i}=2.4+1=3.4$

$\Delta T_b=i{k}_{b}m$

$$\begin{gathered} \mathrm{T}-373=3.4\times 0.52\times 1 \\ \mathrm{T}-373=1.768 \\ \mathrm{T}=374.768\approx 375 \end{gathered}$$

Therefore, the boiling point of the solution at 1 atm is 375 K.