Verified Solution • 2025–26 Session moderate

QAIPMT-2010-Ch-2023: NEET 2010 Chemistry - Class 11 AIPMT-2010-Ch-2023 Solution: Standard entropies of \(X_2\), \(Y_2\) and \(XY_3\) are 60, 40…

Standard entropies of X2X_2, Y2Y_2 and XY3XY_3 are 60, 40 and 50 J K−1^{-1} mol−1^{-1} respectively. For the reaction 12X2+32Y2⇌XY3\frac{1}{2}X_2+\frac{3}{2}Y_2\rightleftharpoons XY_3, ΔH=−30\Delta H=-30 kJ, to be at equilibrium, the temperature should be

Multiple Choice Options

  • A 750 K
  • B 1000 K
  • C 1250 K
  • D 500 K

Step-by-Step Verified Solution

Given reaction is : 1 2 X 2 + 3 2 Y 2 _ XY 3 We know, _ S o = � S p r o d u c t s o _ � S r e a c tan _ t s o = 50 - (30 + 60) = -40 J K -1 mol -1 At equilibrium _ G o = 0 _ H o = T _ S o _ T = _ H o _ S o = _ 30 _ 10 3 _ 40 = 750 K

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