1.24 g of AX2 (molar mass 124 g mol–1) is dissolved in 1 kg of water to form a solution with boiling point of 100.0156°C, while 25.4 g of AY2 (molar mass 250 g mol–1) in 2 kg of water constitutes a solution with a boiling point of 100.0260°C.
Kb(H2O) = 0.52 K kg mol–1
Which of the following is correct ?
1
AX2 and AY2 (both) are completely unionised.
2
AX2 and AY2 (both) are fully ionised.
3
AX2 is completely unionised while AY2 is fully ionised.
4
AX2 is fully ionised while AY2 is completely unionised.