Chemistry - Liquid Solution Question with Solution | TestHub

1.24 g of ${\mathrm{AX}}_2$ (molar mass $124\mathrm{g}{\mathrm{mol}}^{-1}$ ) is dissolved in 1 kg of water to form a solution with boiling point of $100.0156^{\circ }\mathrm{C}$, while $25.4{\mathrm{g}}^{\circ }$ of ${\mathrm{AY}}_2$ (molar mass $250\mathrm{g}{\mathrm{mol}}^{-1}$ ) in 2 kg of water constitutes a solution with a boiling point of $100.0260^{\circ }\mathrm{C}$.
${\mathrm{K}}_{\mathrm{b}}\left({\mathrm{H}}_2\mathrm{O}\right)=0.52\mathrm{K}\mathrm{kg}{\mathrm{mol}}^{-1}$
Which of the following is correct ?