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Solutions question

2025 · 29 Jan · Shift 1 · Q1
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  5. /2025 · 29 Jan · Shift 1 · Q1

Solutions question

2025 · 29 Jan · Shift 1 · Q1

JEE MainChemistrySolutionsMCQ+4 / −1
1.24 g of AX2AX_2AX2​ (molar mass 124 g mol−1) is dissolved in 1 kg of water to form a solution with boiling point of 100.015°C, while 25.4 g of AY2AY_2AY2​ (molar mass 250 g mol−1) in 2 kg of water constitutes a solution with a boiling point of 100.0260°C. Kb(H2O)K_b(H_2O)Kb​(H2​O) = 0.52 kg mol−1 Which of the following is correct?
  1. A
    AX2AX_2AX2​ and AY2AY_2AY2​ (both) are completely unionised.
  2. B
    AX2AX_2AX2​ and AY2AY_2AY2​ (both) are fully ionised.
  3. C
    AX2AX_2AX2​ is completely unionised while AY2AY_2AY2​ is fully ionised.
  4. D
    AX2AX_2AX2​ is fully ionised while AY2AY_2AY2​ is completely unionised.
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